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Gadolinium belongs of 4f series. Its atomic number is 64. Which of the following is the correct electronic configuration of gadolinium?

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Important Questions on The d- and f-Block Elements

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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 21 - The d- and f-Block Elements>AIPMT - 4th May 2014>Q 18
Magnetic moment 2.83 BM is given by which of the following ions?
(At.nos. Ti=22,Cr=24, Mn=25, Ni=28)
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EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 21 - The d- and f-Block Elements>AIPMT - 4th May 2014>Q 19
Reason of lanthanoid contraction is: