Question:
Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH,
KH, RbH, CsH, the correct order of increasing ionic character is
(i) LiH > NaH > CsH > KH>RbH
(ii) LiH < NaH < KH < RbH < CsH
(iii) RbH > CsH > NaH > KH > LiH
(iv) NaH > CsH > RbH > LiH > KH
Solution:
Option (ii) is the answer.
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