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QJEEM19Ch2947: JEE Main 2019 Chemistry - Class 11 JEEM19Ch2947 Solution: The element having greatest difference between its first and…
The element having greatest difference between its first and second ionization energies, is :
Multiple Choice Options
- A Ba
- B Ca
- C Sc
- D K
Step-by-Step Verified Solution
Electronic configuration of Potassium (K) :
1s22s22p63s23p64s1
After first ionisation enthalpy its configuration becomes :
1s22s22p63s23p6
which is a inert gas configuration. To remove an electron from inert gas configuration requires very high energy.
So Potassium (K) have high difference in the first ionisation and the second ionisation energy as it achieve stable noble gas configuration after first ionisation.
1s22s22p63s23p64s1
After first ionisation enthalpy its configuration becomes :
1s22s22p63s23p6
which is a inert gas configuration. To remove an electron from inert gas configuration requires very high energy.
So Potassium (K) have high difference in the first ionisation and the second ionisation energy as it achieve stable noble gas configuration after first ionisation.