Match List-I with List-II and select the correct answer using codes given below the lists – List-I (Metal ions) List- II Magnetic moment (B.M.) (1) C r 3 + ( A ) 35 (2) F e 2 + ( B ) 30 (3) N i 2 + ( C ) 24 (4) M n 2 + ( D ) 15 ( E ) 8

Question

Match List-I with List-II and select the correct answer using codes given below the lists – List-I (Metal ions) List- II Magnetic moment (B.M.) (1) C r 3 + ( A ) 35 (2) F e 2 + ( B ) 30 (3) N i 2 + ( C ) 24 (4) M n 2 + ( D ) 15 ( E ) 8, 1 - ( B ) , 2 - ( C ) , 3 - ( E ) , 4 - ( D ), 1 - ( B ) , 2 - ( C ) , 3 - ( E ) , 4 - ( A ), 1 - ( D ) , 2 - ( C ) , 3 - ( E ) , 4 - ( A ), 1 - ( D ) , 2 - ( E ) , 3 - ( C ) , 4 - ( A )

MARKS App · Accepted Answer

The atomic number of C r = 24 , F e = 26 , M n = 25 , N i = 28 . No of unpaired electrons C r 3 + = 3 , Fe + 2 = 4 , Ni + 2 = 2 , Mn + 2 = 5 . The magnetic moment is calculated by n ( n + 2 ) , where n is number of unpaired electrons.

	List-I (Metal ions)		List- II Magnetic moment (B.M.)
(1)	$C r^{3 +}$	$(A)$	$\sqrt{35}$
(2)	$F e^{2 +}$	$(B)$	$\sqrt{30}$
(3)	$N i^{2 +}$	$(C)$	$\sqrt{24}$
(4)	$M n^{2 +}$	$(D)$	$\sqrt{15}$
		$(E)$	$\sqrt{8}$

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