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Lih, Nah and Csh in Order of Increasing Ionic Character. - Chemistry

Arrange the following

LiH, NaH and CsH in order of increasing ionic character.

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Solution

The ionic character of a bond is dependent on the electronegativities of the atoms involved. The higher the difference between the electronegativities of atoms, the smaller is the ionic character.

Electronegativity decreases down the group from Lithium to Caesium. Hence, the ionic character of their hydrides will increase (as shown below).

LiH < NaH < CsH

Concept: Hydrides - Covalent Or Molecular Hydride
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APPEARS IN

NCERT Class 11 Chemistry Textbook
Chapter 9 Hydrogen
Q 16.2 | Page 289
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