Ncert Exercises & Solutions

Match the following species with their corresponding ground state electronic configuration.

	Atom/Ion		Electronic configuration
A.	Cu	1.	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10}$
B.	Cu²⁺	2.	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2}$
C.	Zn²⁺	3.	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$
D.	Cr³⁺	4.	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9}$
		5.	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{3}$

	A	B	C	D
1.	4	2	5	1
2.	3	4	1	5
3.	3	2	1	4
4.	4	2	1	3