Question

Maximum oxidation state (+8) is exhibited by [ ]

a) CO and Ni b) Ru and OS c) Te and I d) Cl and I

2. An element with electronic arrangement as 2, 8, 18, 1 will exhibit the following stable oxidation

states [ ]

a) + 2 and + 4 b) + 1 and + 2 c) +2 only d) + 1 only

3. The stable oxidation state of thallium, a III A group element is [ ]

a) + 1 b) + 3 c) – 3 d) + 5

4. ‘X’ is a element which belongs to V A group and 3rd

period. The oxidation state and name of

element are [ ]

a) + 5 and P b) – 3 and N c) + 5 and N d) – 3 and 5

5. The oxidation number of sulphur in H2S is [ ]

a) – 1 b) – 2 c) + 6 d) + 4

6. Number of valence elements in “argon” is [ ]

a) 0 b) 8 c) 3 d) 6

7. An element has nine positive charges in its nucleus its common oxidation state is [ ]

a) + 7 b) + 5 c) – 1 d) + 1

8. Oxidation number of an elements is mostly equal to [ ]

a) Period number b) Group number c) Both a and b d) Atomic number

9. Among the following compounds oxygen has a positive oxidation number in [ ]

a) H2O b) OF2 c) HNO3 4) All of the above

10. The oxidation number of nitrogen in Mg3N2 is [ ]

a) – 1 b) + 1 c) – 2 d) – 3







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Answer 1

Answer:

Please sir i dont understand this question write it clearly next time

Answer 2

Answer:

yes me tooooo cant understand

Explanation: