Which of the following statement is not correct? (A) The first ionisation energies (in kJ mol ) of c — NEET Chemistry Past Papers Chemistry Question

Question

Which of the following statement is not correct? (A) The first ionisation energies (in kJ mol ) of carbon, silicon, germanium, tin and lead are 1086, 786, 761, 708 and 715 respectively. (B) Down the group, electronegativity decreases regularly from B to Tl in boron family (C) Among oxides of the 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 to maintain its structure.