Periodic Classification and Periodic Properties - Result Question 19

####16. Which of the following has the maximum number of unpaired electrons?

(a) Mg2+

(b) Ti3+

(c) V3+

(d) Fe2+

(1996,1M)

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Answer:

Correct Answer: 16. (b)

Solution:

  1. Mg2+=1s22s22p6= no unpaired electron

Ti3+=1s22s22p63s23p63d1= one unpaired electron

V3+=1s22s22p63s23p63d2= two unpaired electrons

Fe2+=1s22s22p63s23p63d6= four unpaired electrons



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