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Chemistry
Which of the following statements is not correct?
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Q. Which of the following statements is not correct?
NTA Abhyas
NTA Abhyas 2020
Classification of Elements and Periodicity in Properties
A
The first ionization energies in (kJ $mol^{- 1}$ ) of carbon, silicon, germanium, tin and lead are 1086, 786, 761, 708 and 715 respectively
14%
B
Down the group, ionization energy decreases regularly from B to T1 in boron family
71%
C
Among oxides of the elements of carbon family, CO is neutral, GeO is acidic and SnO is amphoteric
0%
D
The 4f and 5f-inner transition elements are placed separately at the bottom of the periodic table
14%
Solution:
In boron family ionization energy decreases abnormally down the group and the order is as follows
B > Tl > Ga > Al > In