What is the oxidation number of hydrogen in metal hydrides?
Correct answer: D. -1
- A. 0
- B. +1
- C. 2
- D. -1
Explanation
.Metal hydrides are defined as compounds that are formed when a metal element is bonded to hydrogen. In metal hydride, the metal is present in the form of cation and hydrogen is present in the form of anion. The hydrogen anion acts as a nucleophile in metal hydride compounds and the oxidation state of hydrogen is -1. Therefore D is the correct answer.
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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