Multiple choice

Which of the following is most stable?

  1. Pb+2

  2. Sn+2 .

  3. Si+2

  4. Ge+2

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This option is correct. In Pb+2 inert pair effect is there i.e. because of lanthanoid contraction , poor shieding effect of  4f14  electrons . The effective nuclear charge increases and after removal of two  electrons it becomes really hard to remove the other two electrons . Hence, Pb+2 is most stable among its group because lanthanoids contraction observe in this atom only .

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