According to Slater's rule , correct order of `Z_("eff")` on valence shell electron is :

Options

A. `Fe gt Fe^(2+) gt Fe^(3+)`
B. `N^(3-) lt O^(2-) lt F^(-)`
C. `Na^(+) lt Mg^(2+) lt Al^(3+)`
D. `Tl^(2+) lt V^(3+) lt Mn^(5+)`

Answer

B, C, D

Explanation

(b) `N^(3-) lt O^(2-) lt F^(-) [Z_(eff)prop(1)/("Charge on anion")]`
(c) `Na^(+) Mt^(+) lt Al^(3+)`
(d) `Tl^(2+) lt V^(3+) lt Mn^(5+)`