Published by:
CGP EDU Academic Team
Published on: August 21, 2026
The increasing order of the first ionization enthalpies of the elements 
and 
is
A
F 
S 
P 
B
S P B
B
P 
S 
B 
F
S B F C
B 
P 
S 
F
P S F
D
B 
S 
P 
F
S P F
Text Solution
Verified by ExpertsThe correct answer is:
Element : | B | S | F | |
I.E. | 801 | 1000 | 1011 | 1681 |
In general as we move from left to right in a period, the ionization enthalpy increases with increasing atomic number. The ionization enthalpy decreases we move down a group. 
has a stable half filled electronic configuration than 
. For this reason, ionization enthalpy of 
is higher than 
.
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