Which of the following is not the correct arrangements according to the property indicated againsts it ?

Options

A. `Li lt Na lt K lt Cs` (metallic radius )
B. `I lt Br lt F lt Cl` (electron affinity)
C. `B lt C lt N lt O` (first ionisation energy)
D. `Al^(3+) lt Mg^(2+) lt Na^(+) lt F^(-)` (ionic radius )

Answer

3

Explanation

`{:(B, lt, C,lt,O,lt,N" " "(First ionisation energy)"),(2s^(2)2p^(1),,2s^(2)2p^(2),,2s^(2)2p^(4),,2s^(2)2p^(3)),(,,,,,,"(Half filled stable)"):}`