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Assertion :- Oxidation state of Hydrogen...

Assertion :- Oxidation state of Hydrogen is `+1` in `H_(2)O` while `-1` in `CaH_(2)`.
Reason :- `CaH_(2)` is a metal hydride and for metal hydrides, hydrogen is assigned the oxidation number of `-1`.

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(A) Oxidation state of 'H' is +1 in CuH_(2) and is -1 "in" CaH_(2) (R ) Ca is stronger electropositive than hydrogen.

Statement Oxidation state of H is +1 in CuH_(2) and -1 in CaH_(2) Explanation Ca is strong electropositve metal.