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
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
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1 Answer
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This is a multiple choice answer as classified in NCERT Exemplar
Option (ii)
LiH < NaH < KH < RbH < CsH
In ionic hydride as it is formed by the s-Block element, down the group, electropositive character increases.
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