Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH, the correct order of increasing ionic character is
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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(ii) LiH < NaH < KH < RbH < CsH
Ionic character increases as the size of the atom increases.
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