Q. Spin magnetic moment of  x n + Z = 26   i s   24 B . M .  . Hence number of upaired electrons and value of n respectively are 
  1. 4,2
  2. 2,4
  3. 3,1
  4. 0,2

Dear Student,

Magnetic moment  is =n(n+2)BM
According to given data,

n(n+2)24
Squaring on both sides,we get

⇒ n(n+2) = 24
⇒ n(n+2) = 24
⇒ n = 4
Thus 4 unpaired electron in the X element
The X element have atomic number 26 is given.
Atomic number 26 ,element have electronic configuration is [Ar] 4S23d6 and It has 6 electrons in the valence shell 
So the value of n = 6-4=2 
Thus, Xn+ =  Fe2+  
 Fe2+has four unpaired electrons.
So the correct answer is (1).

Regards




  • 3
Option 1
  • 1
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