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Question

What is the oxidation number of each atom in KH?

A
+1, -1
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B
-1, +1
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C
-1, -1
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D
+1,+1
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E
Not enough information given.
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Solution

The correct option is A +1, -1
The oxidation number of each atom in KH is +1, -1.

H is present as hydride with an oxidation number of -1.

K (an alkali metal) is present as cation with oxidation number of +1.

Hence, the correct option is A.

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