MCQ
Ionic hydrides are formed by:
- ATransition metals
- ✓Elements of very high electropositivity
- CElements of very low electropositivity
- DMetalloids
✓
Answer
Correct option: B.
Elements of very high electropositivity
- Elements of very high electropositivity
Ionic hydrides are formed by metals that are electropositive with respect to hydrogen i.e., alkali and alkaline earth (except Be and Mg). They involve an electron transfer from metal to H forming hydride ion H$^-$.
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