Which of the following compounds contains hydrogen in the -1 oxidation state?

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Question: Which of the following compounds contains hydrogen in the -1 oxidation state?

Options:

Correct Answer: NaH

Solution:

In sodium hydride (NaH), hydrogen has an oxidation state of -1.

Which of the following compounds contains hydrogen in the -1 oxidation state?

Which of the following compounds contains hydrogen in the -1 oxidation state?

Step 1: Understand what oxidation state means. It is a way to keep track of electrons in a compound.
Step 2: Know that hydrogen usually has an oxidation state of +1, but it can be -1 in certain compounds.
Step 3: Identify the compound in the question, which is sodium hydride (NaH).
Step 4: In sodium hydride, sodium (Na) has an oxidation state of +1.
Step 5: Since the compound is neutral, the total oxidation states must add up to 0.
Step 6: Therefore, if sodium is +1, hydrogen must be -1 to balance it out.
Step 7: Conclude that in sodium hydride (NaH), hydrogen has an oxidation state of -1.

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