Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Carbon and germanium belong to the 
group. The maximum coordination number of carbon is less than germanium, because of
A
larger size of germanium
B
electronegativity difference
C
availability of low-lying 
-orbitals in germanium
-orbitals in germanium D
electrical conductivity
Text Solution
Verified by ExpertsThe correct answer is:
C
Carbon is placed in 2 nd period and electronic configuration of 
is 
. Hence it does not have vacant 
-orbital, and its maximum covalency is 4 . While germanium belongs to 3rd period of the periodic table. Electronic configuration of 
is [Ar] 
. Hence, It has vacant 
-orbital.
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