Q.
Which of the following hydrogen compounds is most ionic ?
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a
LiH
b
CsH
c
HF
d
HI
answer is B.
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Detailed Solution
IA group metal hydrrides are [ionic in nature] called ionic hydrides, Those are As the metallic nature of central metal increases ionic nature of hydride increasesTherefore easy of ionisation of M-H bond increases and hence most ionic is CsH→ Whereas HF,HCl,HBr, HI are covalent hydrides.
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