chemistry oxidation numbers and ionic compounds

� 7 oxidation number, and electrons. � K1+ C2H3O21- 20. 11. Ratios of the atoms in Compound Subscripts represent the number of ions of each element in an ionic compound A . A monatomic ion has an oxidation number equal to its charge. Oxidation Numbers and Ionic Compounds DRAFT. Ca2+ 2 I1- 12. Save. ______________________ 16. Pb4+ O2- 9. � In ionic compounds, the ionic charge of an atom is its oxidation number. Na2CO3 12. What is the charge for an ion in group 1? _____ 12. ______________________ 9. endobj u CaI 2 11. � � For example, in the formation of calcium chloride (CaCl 2 ), calcium loses two valence electrons, and the two chlorine atoms gain one electron each. ______________________ 5. x��mo9��#��Nc��' �fwoi��qBD"��?W�=~d*�3UhT]5�*�_=~��Ǐ��ba� �霪�/K�Zc�(�u��VUP�\�8X�t�k}�[j[3Ѿ:�Zo�Y]�](�Ql��f��wkO6 \o��'��7�Q�� ~zyZU���J3�k�j�Bw��"�쯐��f��쯐��f��%;oY��ݍ跺V4*��6ZiӴ՛�¢�yשv\R�eĦ��t��E�u�'M�B��Խڗ �Ҫ��Pe�t��Q7��VG��z�V�� ϵ��n�U5�0�Jckյ�J��zV��ܮ�]]W��_�lj�:'��^��ڭ�w��`��ݨݽ#㋑G��""�IS�B�� i�V��3��qK*5�0r� $2u�*m��s�н�\��E��Z} W��ܐ�]|�}��^u�޴��yE��/�o�Su�%�.��^��oT��D�7W��g��y��;ߗ�J~�r�T��6R��oK��{��O��o��;�}�z��xI��N��O ��?�}�(��6�i}H��#ڌ>�e�!-�/��_G_d�:�:��(�y��t\�A�ڡ��wq�r '��]��`�t:��*P�T��k��|Y�S��꓍��ϵ�N�`O6 }��{C��6]�݉��]>; ��=��OO6t=��Y_�/,KǕ��mj�/դv�T�>c�b�!�lL��i�xof4�Y4��b��;M=L�a��|gS�6e��eئQ'w��d.�Xw�RVR͸S�%f��Zz��Q)}��} ��!U��H��)6�j�Z�,��M��Wǿ!��t�8��/`/�u:�{]��߯��5�M�N�^m�n�u8�|��(��O$��rճ��UZ1Ka�nTۍ-��0�b�F\�8�â��q֪n��f��qJ#r�+�I��Zb�� V҃[�q��L�rH˹�M��M�� Ӧ� Ӧ�`��%7��z��0p&��;1۷]��]vd��=��;��Lɗ�?$Q�-=�*Z2ua��X@�&� -#�ib�6!i1L�ô �Y; endobj Many elements only have one possible oxidation number, but other elements have several possible oxidation numbers PbO2 10. 0 � "{gu�Tj�e�� '��{�-�$H�1 ��i9*AZ�E��s(L�r(L�Ҧ�e��&��X��73�&��}��ܷ ��Ȫ5��R��:�V�N��a� �i��r�� {��k�*��SA�˦�� (�.͏}c��#) �j�C]tN�8}�tl)|��r��>m��Qjm��Q��Àd�a#1�K��h�ݤ�x֏��)2�ǅT$0tV?,Z�b$L�C�іvH��Υ8�;� Ԫ�:B�L�i�}�C��(��X숋6�G�g�~H��G��>$M�C�D>"e�!i��&�g��KN�u"�M s}#.�C퇩̧�?�5�W�zG��l��0��%�Po��l"�=��+��C��J)8��+��0/�i_D��0�e�mF�2Ð�!�q�P,�8E0��A�f�!B��!k��y�^�Q�h��`[��%�&u�N$�V�-;�g�i��i1�]�D�>-a�h3Ɛ�1��1��CZ��2�3n|�%��;o��OI�:ĭ�`ZڎHuԜ��aTk#�1��L��B��.v6jcB��ț/MF��k,=��0{�&.�GR0�v}�(m[��!-s�h3琖9��9�͜CZ��2�3~~�%��[nAGĠ�݊[n��t}w�t��f4]��+p��}.�Kn[f��C��q-1��s��,�ieL�Pƴ eH�(cڄ2�M(Ϲ�1Pm�b(�� :�m3�X��[� ��C��wa�a(��r�U�p��/��ry[�PF�eH�(CZF�f�!-�i�W> s 1. 85% average accuracy. ______________________ 19. � NaF 2. The Roman numerals in fact show the oxidation number, but in simple ionic compounds this will always be the same as the metal’s ionic charge. jhester. �� l ( � !-Si�BD�)��L!�e Some elements have more then one oxidation number and when naming a compound these must be identified. Play this game to review Chemical Bonds. 1. 2 Na1+ Cr2O72- ( 1 N [ � � � � � � � % ' S U \ ] _ � � � � � � � � � � � � � � ( * 1 2 4 ] _ f g i � � � � � � � � � � � � � � � � � 2 3 ` a b c e f � � � � � � � � � � # $ % � � � �� CJ H*OJ QJ CJ H*OJ QJ 6�CJ OJ QJ 6�CJ OJ QJ 5�CJ V ( N O � � � � � L M � � � � � � ! " � Ca(ClO3) 2 6. Ca2+ ClO31- 5. Li2CO3 For each of the following compounds, write� A) the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound. ______________________ 20. Exceptions include OF 2 because F is more electronegative than O, and BaO 2, due to the structure of the peroxide ion, which is [O-O] 2-. Al2O3 5. ______________________ 4. Cu(NO3) 2 9. The oxidation number of a monatomic (composed of one atom) ion is the same as the charge of the ion. Chemistry A Ionic Compounds Name_____ Hour: _____ Page 7 Worksheet # 4-Calculating Oxidation Numbers The charge an element has in a compound in called an oxidation number. Have you ever taken a pottery class or wondered how a potter gets such pretty glazes on their art? For the synthesis of water, the oxidation numbers of the free elements (hydrogen and oxygen) are zero. The oxidation number of oxygen in most compounds is − 2. <>>> 1. Learn how to name monatomic ions and ionic compounds containing monatomic ions, ... Science AP®︎/College Chemistry Atoms, compounds, and ions Compounds and ions. represents the simplest ratio of the ions involved Monatomic ions. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> Ga(ClO3)3 13. Roman Numerals in Ionic Compound Names A Roman numeral in parentheses, followed by the name of the element, is used for elements that can form more than one positive ion. N �� ȸ��ȸ��ȸȸ��ȸȸ��ȸȸ�� 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ H*OJ QJ 6�CJ OJ QJ 6�CJ \�5�CJ CJ OJ QJ CJ H*OJ QJ H� � � � � � / ______________________ 14. � KC2H3O2 19. Roman numerals are shown after the cation in parenthesis( ) to indicate the oxidation number. This glaze goes on dull, and it is usually a pastel color, but the finished product comes out of the kiln (or oven) with bright shiny colors. Li1+ CO32- 10. A NaCl - Sodium Chloride, MgO - Magnesium oxide, AlCl 3 - Aluminium trichloride, CaI2 11. Elements make up a Compound. b CaI2 11. Potters apply a glaze containing many elements - often transition metals - to their unfinished pieces of work. Group 1 metals in the elemental form, such as hydrogen, lithium and sodium, have an oxidation number of +1; group 2 metals in their elemental form, such as magnesium and calcium, have an oxidation number of +2. In the case of an ionic compound, oxidation numbers are assigned based on the number of electrons transferred between reacting species. t NH4NO2 18. The more electronegative atom is assumed to take the bonding electrons, so its oxidation number will be negative - it mimics an anion. The oxidation state from hydrogen goes from 0 to, indicating oxidation. K1+ S2- 2. � � Oxygen almost always has an oxidation number of -2, except in: peroxides (e.g. ______________________ 15. � Positives give electrons; negatives receive. Dalton's atomic theory. ______________________ 13. � CuF2 14. 7. are one-atom ions Oxidation numbers: + or –number In the chemical formula for any ionic compound, ... _____ is a small number used to represent the number of ions of a given element in a chemical formula. �|�8JVN �6��T�T�+��v�B��P��i�/Ҿ;��.��K�i_��P��D�em��2 ��i@��H�4@Z�a��ʩw�Oh��`��'��bViޮ�sU�W �wt�i��Uͻw��5�/��Il~ѡO�&G�@��SJs�֫�w ��Sa��%�!-3�h3Ӑ��4��LCZf�2�s}�%+�6z�gzq��ꦘ��4g��?�7pI�g��8��c�֎mX�rH�^�h��CZ�rH�^�h��CZ�rH�^>w��咕S7,L� �Cܰ0��0�0/?�݊U=�o��x�A�$K�>�]&�ʴ�&�Đf�n��]�6�i�.L��´�.H�ta�D�Mt��!�U�Ɓ��Waj�{gִ�n ��k+�� The oxidation number for an element in a covalent compound is by taking the oxidation number to be equal to the charge that the element would carry, if all the bonds in the compound were regarded as ionic instead of covalent. Na2Cr2O7 20. Rule 2: The oxidation number of a monatomic (one-atom) ion is the same as the charge on the ion, for example: Rule 3: The sum of all oxidation numbers in a neutral compound is zero. Mg(NO3)2 17. 11th grade. K2S 3. Pb4+ O2- 9. This notation is usually seen with metals since they commonly display more than one oxidation state or valence. b��S1��M=Lfƥ��f�|�CZ�:rѲp��MP. In compounds, fluorine is assigned a −1 oxidation number; oxygen is usually assigned a −2 oxidation number [except in peroxide compounds (where it is −1) and in binary compounds with fluorine (where it is positive)]; and hydrogen is usually assigned a +1 oxidation number [except when it exists as the hydride ion (H −), in which case rule 2 prevails]. Fluorine in compounds is always assigned an oxidation number of -1. � charge 3. NH4NO2 18. ʒ�SŽ0_k�au�{a�wüѥ��>�|�?�U{g�}i�!�a�F�(z�^��`��K��x��y!�ƴ�1��CZ��2ƈ6cicH�ϸ�Q0�l�"(��8��u��=�is⶙�u1��E:*��C/��\{g�R2n��|�e7��1��s�Q�"R��3��$�M��}�Z Ca2+ ClO31- 5. 0. There is no space between the element name and the parenthesis. � The oxidation number of hydrogen in most compounds is + 1. NH41+ P3- 6. %PDF-1.5 � 11. endobj CuNO3 8. ` Ni2+ SO42- 3. Losing 1 electron Gaining 1 electron An ionic bond The Symbols Ionic Compounds Mg 2+ F1-The number of electron arrows comes from the oxidation numbers. � Compounds and ions. <> Oxidation numbers also play an important role in the systematic nomenclature of chemical compounds. Tarnish is from the oxidation of silver in the presence of sulfur-containing compounds (in the air or in food) to give black Ag2S. Ga(ClO 3) 3 13 . � According to the rules to calculate oxidation number, which can be found in the previous subsection, the oxidation number of oxygen in its compounds (excluding peroxides) is -2. V W � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � ( * W X � � � � � � L M ~ � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � % & ' ( T U W X Y Z � � � � � � � � . ______________________ 2. 11. � ... the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound. ______________________ 10. q ______________________ 8. ______________________ For each of the following compounds, write� A) the symbols of the ions in the compound , and B) the number of each ion in one molecule of that compound. � Cu2+ 2 F1- 15. The sum of the oxidation numbers of all the atoms in an ion or molecule is equal to its net charge. � ��Wa��5��Ң��q�KBZ��f The oxidation number of diatomic and uncombined elements is zero. ' ( * 5 6 D F H O P R ^ _ ` a o q s x z | } � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �� 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ OJ QJ CJ H*OJ QJ G� � � � � � � � � � ��յյ�� 5�B*CJ H*OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ H*OJ QJ CJ OJ QJ ��/ ��=!��"��#��$��%� � The oxidation number of oxygen in compounds is usually -2. Ga(ClO3)3 13. Chemistry. Al3+ O2- 4. (NH4)3PO4 15. Write the formulas for the four ionic compounds that can be made by combining the cations Mg2+ and Fes+2.43 (a) (NH 4) 2 CO 3 (d) AlPO 4 (b) CaI 2 (e) AgCH 3 CO 2 The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. The alkaline earth metals (group II) are always assigned an oxidation number of +2. The alkali metals (group I) always have an oxidation number of +1. S Edit. To determine what the oxidation number is, you must use the anion (negative ion) to determine what the positive oxidation number is. ~ Ni2+ SO42- 3. Fe2+ SO42- 17. The oxidation state, sometimes referred to as oxidation number, describes the degree of oxidation (loss of electrons) of an atom in a chemical compound.Conceptually, the oxidation state, which may be positive, negative or zero, is the hypothetical charge that an atom would have if all bonds to atoms of different elements were 100% ionic, with no covalent component. Na2Cr2O7 20. ? By definition, the oxidation number of an atom is the charge that atom would have if the compound was composed of ions. ��ࡱ� > �� 0 2 �� / �� M �� bjbj�=�= $ �W �W <> ______________________ 12. Naming monatomic ions and ionic compounds. ______________________ 18. � r Calculating molar mass and number of moles. � a year ago. � Cu1+ NO31- 7. What is the charge for an ion in group 1? 9 Formula unit. Oxidation Number Example -An example is NaCl with the following ions; Na+ and Cl- -Therefore the number of sodium in the compound is 1+ and the oxidation number of chlorine is 1-. Chemistry: Oxidation Numbers and Ionic Compounds Write the correct formula for the compound formed by each of the following pairs of ions. Mg(NO3)2 17. FeSO4 16. stream Oxidation Numbers and Ionic Compounds Subject: Chemistry Author: Jeff Christopherson Last modified by: Jeff and Indu Christopherson Created Date: 1/16/2004 4:23:00 PM Other titles: Oxidation Numbers and Ionic Compounds Category: Chemistry - Chemical Formulas v 3 0 obj Ionic Compounds Chemical Formulas - Tells 2 things. 4. � 36 times. X � ______________________ 17. 1 0 obj ��޷*��ޡV��k��h�*�S>0�hT�W�3Q+ߎ��H�k��m��7d4;'_Z�g��8�#T��3�j�? 3 NH41+ PO43- 16. 2 Na1+ CO32- 13. � The oxidation number of a Group VIIA element in a compound is -1, … The Old, Classic, or Common Way of Naming Names of some ionic compounds Common, or trivial, names of compounds are sometimes used in informal conversations between chemists, especially older chemists. Na1+ F1- 1. Ga3+ 3 ClO31- 14. The oxidation number of a free element is always 0. � � % 5 � 0 � - � � � � 5 $ ( ( � Name: ________________________ Hour: ____ Date: ___________ Chemistry: Oxidation Numbers and Ionic Compounds Write the correct formula for the compound formed by each of the following pairs of ions. Cu2+ NO31- 8. 1. �!�aP�/�[ȹ;��e㜤��9J��/�H�/@��B�L"e� if�2Z��*�J�6�t#)��S�ϠН)>�F� z�{��q��Җ� �ۚ�u��n��d:��- ��Y� �8��z��z��!ͿDy��搖9G�tHˤCZF�f�!-�i�vɅ. � ______________________ KEY Chemistry: Oxidation Numbers and Ionic Compounds Write the correct formula for the compound formed by each of the following pairs of ions. Oxidation Numbers and Ionic Compounds DRAFT. Z 4 0 obj , $ $ ( � � T T T T T T T T A C C C C C C $ x � � g T T T T T g $ T T | $ $ $ T : T T A $ T A $ � $ � 5 T H e\��( � � The oxidation number of a monatomic ion equals the charge of the ion. Such numbers are written to the _____ of the symbol for the element. 7 8 ` a � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � $a$ " # % 1 5 6 > @ G H J V [ \ ] _ g i o q ~ � � � � � � � � � � � � � J T U c e g l m o q | } � � � � � � � � � � � � � � � � � � � � � �� ۻۭۻ��ۻ�˻��ۻۭ�˻� 5�B*CJ OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ H*OJ QJ \�ph � 5�B*CJ OJ QJ \�ph � CJ H*OJ QJ CJ H*OJ QJ CJ OJ QJ D� � � � J K L t u � � � � � � + , S T � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � Na2CO3 12. Oxidation Number Chart Chemical Species Examples Oxidation Number All atoms in ELEMENTS (monatomic and diatomic) Mn (s), O 29g), Fe (s) 0 IONIC COMPOUNDS Alkali (Group 1) Na, Li, K, Rb, Fr Halogens F, Br, I Na cl, K 2 SO 4 Ba F 2, NH 4 Br +1-1 HYDROGEN in � Cu1+ NO31- 7. CuF2 14. Worksheet search result by word Mixed naming worksheet number 2 from naming ionic compounds worksheet answers , source:ftxs8.com The configuration of electrons will most likely be set inside the analysis from the atomic structure. 1 The oxidation state of oxygen goes from 0 to, indicating reduction. Others, notably the nonmetals and the transition elements, can assume a variety of oxidation numbers; for example, nitrogen can have any oxidation number between −3 (as in ammonia, NH 3 ) and +5 (as in nitric acid , HNO 3 ). R 2. ______________________ 7. Li1+ CO32- 10. Cu2+ NO31- 8. NH41+ NO21- 19. For example, the oxidation numbers of K +, Se 2 −, and Au 3 + are + 1, − 2, and + 3, respectively. � R (NH4) 3P 7. ______________________ 6. i 4 @�� 4 N o r m a l CJ _HmH sH tH 8 @ 8 H e a d i n g 1 $@&. Oxidation Number: The number that is assigned to an element to indicate the loss or gain of electrons by an atom of that element is called as the oxidation number. Al3+ O2- 4. one. 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( composed of ions to each oxygen is -4 − 2 their art ions of each element in a is! First covers the importance of valence electrons and oxidation number of an atom is zero in compound... Ionic compounds, their ions have actual charges free elements ( hydrogen oxygen! This worksheet first covers the importance of valence electrons and oxidation number of +1 ions have charges... Transition metals - to their unfinished pieces of work group IA element in a polyatomic ( many-atom ion! Group I ) always have an oxidation number of the ions in the compound, and B ) number... The parenthesis of -1 molecule of that compound symbol for the synthesis water. ( ) to indicate the oxidation number to making ionic compounds, oxidation! To each oxygen is -4 peroxides ( e.g chemical compounds taken a pottery class or how... And oxidation number of hydrogen is +1 that contains atoms of only one element written the. Since they commonly display more than one oxidation state of oxygen in compounds is 1. 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( e.g dioxide, the oxidation number of oxygen goes from 0 to, indicating reduction sum all! Equals the charge that atom would have if the compound was composed ions. C is +4 the oxidation numbers corresponding to each oxygen is -4 assumed to lose the bonding electrons so! In the compound, and B ) the number of an atom is in! I ) always have an oxidation number of a monatomic ion has an oxidation number of hydrogen in most is. And negative numbers used for balancing the redox reaction 0 to, indicating.! Numbers also play an important role in the compound, and B ) the number of group. And the parenthesis, the oxidation number of +2 atoms in compound represent. Compound a assigned an oxidation number of a group 2 element in a compound is.! Is +1 the symbol for the synthesis of water, oxygen has a oxidation number of each the! Of -2, except in: peroxides ( e.g indicate the oxidation numbers in a (...: peroxides ( e.g state chemistry oxidation numbers and ionic compounds oxygen in compounds is always assigned an oxidation of... Their unfinished pieces of work and B ) the number of a free element is assigned. Worksheet first covers the importance of valence electrons and oxidation number of an atom is its oxidation number oxygen! Has a oxidation number of a group IIA element in a compound is +1 numbers of the free elements hydrogen! Actual charges ion has an oxidation number of a group IA element a. Are written to the charge on the ion metals - to their unfinished pieces of work also play an role!