Metal hydrides are ionic,


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


Option (ii) is the answer.

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