Give the oxidation number of the underlined atoms in the followingmolecules and

Question

Give the oxidation number of the underlined atoms in the followingmolecules and ions. (a) C2H2
1
(b) Li2
2
(c) IF7
3
(d) C2H4
4
(e) K2Cr2O7
5
(f) PF6-
6
(g) ClF
7
(h) K2CrO4
8
(i) KMnO4
9
(j) CH4
10
(k) KAuCl4
11
(l) NaHCO3
12
(m) NaIO3
13
(n) KO2
14
Can you please also tell me how you get one as well so i canlearn cause i have not seen an example done for me tounderstand. You willbe saving my life .. thank you (a) C2H2
1
(b) Li2
2
(c) IF7
3
(d) C2H4
4
(e) K2Cr2O7
5
(f) PF6-
6
(g) ClF
7
(h) K2CrO4
8
(i) KMnO4
9
(j) CH4
10
(k) KAuCl4
11
(l) NaHCO3
12
(m) NaIO3
13
(n) KO2
14
Can you please also tell me how you get one as well so i canlearn cause i have not seen an example done for me tounderstand. You willbe saving my life .. thank you

Explanation / Answer

a. -1 b. 0 c. 7 d. -2 e. 6 f. 5 g. 1 h. 3 i.7 j. 4 k. 3 l. 4 m. 5 n. -1 To find these, you need to have a chart of oxidation numbersof the various atoms (many are available online), and then you mustdetermine what charge the cation has based on how much the anionhas (the cation's charge must cancel the anion's charge to make theindicated charge in the resulting molecule). NOTE: oxygen almost always has a -2 ox. number.

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