Question

Metal hydrides are ionic covalent or molecular in nature. Among LiH, NaH, KH, RbH, CsH, the correct order of increasing ionic character is.

• A. $LiH > Nah > CsH > KH > RbH$
• B. $LiH < NaH < KH < RbH < CsH$
• C. $RbH > CsH > NaH > KH > LiH$
• D. $NaH > CsH > RbH > LiH > KH$

Answer 1

Answer: (B)

$LiH < NaH < KH < RbH < CsH$

Answer 2

: Ionic character increases with the size of the cation as we move down the group.