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

Atom / Ion Electronic configuration

A Cu (i) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10}$

B $C u^{2 +}$ (ii) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2}$

C $Z n^{2 +}$ (iii) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$

D $C r^{+ 3}$ (iv) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9}$

(v) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{3}$

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Solution

Analyzing and understanding all the options given

The electronic configuration of given
atoms/ions is:

i) Electronic configuration of $C u (Z = 29) = 2, 8, 18, 1 i . e ., 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$

ii) Electronic configuration of $C u^{2 +} (Z = 29)$
$= 2, 8, 17 i . e ., 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9}$

iii) Electronic Configuration of $Z n^{2 +} (Z = 30) =$
$2, 8, 18 i . e ., 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10}$

iv) Electronic Configuration of $C r^{3 +} (Z = 24) = 2, 8, 11 i . e ., 1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{3}$

Conclusion:

Atom / Ion Electronic configuration

A Cu (iii) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$

B $C u^{2 +}$ (iv) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9}$

C $Z n^{2 +}$ (i) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10}$

D $C r^{+ 3}$ (v) $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{3}$

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Huygens' Principle

Standard XII Physics

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	Atom / Ion		Electronic configuration
A	Cu	(i)	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10}$
B	$C u^{2 +}$	(ii)	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2}$
C	$Z n^{2 +}$	(iii)	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{1}$
D	$C r^{+ 3}$	(iv)	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{9}$
		(v)	$1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{3}$

Match the following species with their corresponding ground state electronic configuration. Atom / Ion Electronic configuration A Cu (i) 1s22s22p63s23p63d10 B Cu2+ (ii) 1s22s22p63s23p63d104s2 C Zn2+ (iii) 1s22s22p63s23p63d104s1 D Cr+3 (iv) 1s22s22p63s23p63d9 (v) 1s22s22p63s23p63d3