A) The first ionization energies (in\[KJ\text{ }mo{{l}^{-1}}\]) of carbon, silicon, germanium, tin, and lead are 1086, 786, 761, 708 and 715 respectively.
B) Down the group, ionization energy decreases regular from B to Tl in boron family
C) Among oxides of the elements of carbon family, \[CO\]is neutral, \[GeO\] is acidic and \[SnO\] is amphoteric
D) The 4f- and 5f-inner transition elements are placed separately at the bottom of the periodic table
Correct Answer: B
Solution :
[b] In Boron family exception are present
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