When Hydrogen Reacts with a Metal to Form a Hydride

question 11

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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