1.

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

Answer»

`Fe gt Fe^(2+) gt Fe^(3+)`
`N^(3-) lt O^(2-) lt F^(-)`
`NA^(+) lt Mg^(2+) lt Al^(3+)`
`Tl^(2+) lt V^(3+) lt Mn^(5+)`

Solution :(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+)`


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