How to find a maximum and minimum oxidation number of metals and non-metals?

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cynzrangrarin1982

Science

medicine

University of Exeter

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  • 1. State if the following changes involve oxidation (O) or reduction (R) or neither (N) Fe2+ → Fe3+ O I2 → I¯ R F2 → F2O R C2O42- → CO2 O H2O2 → O2 O 2. Balance the following half equations... Na+ e- → Na + Fe2+ → Fe3+ +e - I2 + 2e- → 2 I¯ The following table shows the successive ionisation energies for Carbon and Oxygen;
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Element

1st

2nd

3rd

4th

5th

6th

7th

8th

Carbon

1086.5

2352.6

4620.5

6222.7

37831

47277.0

-

-

Oxygen

1313.9

3388.3

5300.5

7469.2

10989.5

13326.5

71330

84078.0

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Use this table to predict the electron configurations of these elements.

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Carbon

1s2 2s2 2p2

Oxygen

1s2 2s2 2p4

Please can you check if my answers are correct and guide me, please? Thank you in advance

  • What will be the usual and the maximum oxidation state in compounds of:
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Li

Br

Sr

O

B

N

Usual

+1

7

+2

-2

+3

+5

Maximum

+1

+9

+2

+8

+5

+7

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