B has a smaller first ionization enthalpy than 
. Consider the following statements:
(I) It is easier to remove 2p electron than 2s electron.
(II) 2p electron of 
is more shielded from the nucleus by the inner core of electrons than the 
electrons of 
.
(III) 
electron has more penetration power than 
electron.
(IV) Atomic radius of 
is more than 
.
(atomic number 
)
The correct statement are :
Text Solution
Verified by ExpertsD
The electronic configuration of 
and 
are:
(I) 
- orbital experienced more 
than 
thefefore 
electron could be easily removed than 
.
(II) In case of 
there are total 4 inner core electrons but in 
only 
(in 
) therefore 
more shielded in 
than 
of 
.
(III) 
-orbital has spherical shape through that 
work 
but p-orbital is dumbell shape therefore its 
less and penetrating power less than 2 s .
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