Published by:
CGP EDU Academic Team
Published on: August 21, 2026
Which one of the following statements is not correct?
A
Transition elements exhibit higher enthalpy of atomization as they have stronger interatomic interaction.
B
(I.E.) 
of 
and 
.
of and .
C
is tetrahedral while 
is square planar
D
The elements which give the greatest number of oxidation states do not occur in or near the middle of the series.
Text Solution
Verified by ExpertsThe correct answer is:
Greater the number of valence electrons, stronger is the resultant bonding and thus greater is the enthalpy of atomization.
has half-filled valence shell electron configuration 
, so it has higher second ionization energy. Similarly 
has completely filled stable valence shell electron configuration, 
, so it has higher second ionization energy.
Element occuring in the middle of the period, eg., manganese shows maximum oxidation states as it contains five unpaired electrons.
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