Assertion (A) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(1) is the configuration of an alkali metal.Reason (A) Alkali metal contain one electron in the s-subshell of valence shell.

Assertion (A) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(1) is the confi

1.	Assertion (A) 1s^(2)2s^(2)2p^(6)3s^(2)3p^(6)3d^(10)4s^(1) is the configuration of an alkali metal.Reason (A) Alkali metal contain one electron in the s-subshell of valence shell.
Answer» Solution :The given configuration is that of COPPER (Group II) and not of ALKALI metal.