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Q.

Out of Fe2+, Fe3+, Mn2+ and Ti2+, the least size is of

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a

Fe2+ 

b

Ti2+ 

c

Fe3+

d

Mn2+ 

answer is D.

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Detailed Solution

  • 3d series  - Sc, Ti , V, Cr , Mn, Fe, Co ,Ni, Cu and Zn
  • Any series Atomic size gradually decreases with increasing in atomic number and  increasing in nuclear force of attractions.
  • So order of size of ions 

                                   Ti+2 > Mn+2 > Fe+2  > Fe+3 

 

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