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Metal hydrides are ionic, covalent or molecular in nature. Among LiH, NaH, KH, RbH , CsH, the correct order of increasing ionic character is
A. `LiH gt NaH gt CsH gt KH gt RbH`
B. `LiH lt NaH lt KH lt RbH lt CsH`
C. `RbH gt CsH gt NaH gt KH gt LiH`
D. `NaH gt CsH gt RbH gt LiH gt KH`

1 Answer

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Best answer
Correct Answer - B
Ionic character increases as the size of the atom increases or the electronegativity of the atom decreases, i.e., `LiH lt NaOH lt KH lt RbH lt CsH`.

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