NCERT Class XII Chemistry <br> Chapter - The d- and f-Block Elements <br> Questions with Solutions

NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions

Question : 3

Total: 49

Explain briefly how +2 state becomes more and more stable in the first half of the first row transition elements with increasing atomic numbers?

Solution:

With increasing atomic number the effective nuclear charge increasesafter losing two electrons from s-orbital. The ionic size decreases whichresults in more stability. The stability is less in the beginning due to toofew electrons to lose or share.

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NCERT Class XII Chemistry Chapter - The d- and f-Block Elements Questions with Solutions

NCERT Class XII Chemistry
Chapter - The d- and f-Block Elements
Questions with Solutions