The correct sequence of increasing covalent character is represented by

Options

A. `BeCI_(2) lt NaCI lt LiCI`
B. `NaCI lt LiCI lt BeCI_(2)`
C. `BeCI_(2) lt LiCI lt NaCI`
D. `LiCI lt NaCI lt BeCI_(2)`

Answer

B

Explanation

Covalent character `prop` Polarisation
Polarisation `prop` Charge of cation/anion
`prop` size of anion
`prop (1)/("size")` of cation
Charge on cation
`Na^(+), Li^(+), Be^(2+)`
size `Be^(2+) lt Li^(+) lt Na^(+)`
Covalent character `NaCI lt LiCI lt BeCI_(2)`