When Hydrogen Reacts with a Metal to Form a Hydride

question 37

Multiple Choice

When hydrogen reacts with a metal to form a hydride (e.g.,CaH₂) ,what are the oxidation numbers of the calcium (in this case) and hydrogen,respectively,in the product?

• A)"-2 and +1"
• B)"+1 and -2"
• C)"+2 and -1
• D)"0 and 0"
• E)"+2 and -2"

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Definitions:

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