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Chemistry
Which of the following elements will have highest second ionisation enthalpy?
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Q. Which of the following elements will have highest second ionisation enthalpy?
Classification of Elements and Periodicity in Properties
A
$1s^2\, 2s^2\, 2p^6\, 3s^2$
10%
B
$1s^2\, 2s^2\, 2p^6\, 3s^1$
61%
C
$1s^2\, 2s^2\, 2p^6\, 3s^2\,3p^2$
15%
D
$1s^2\, 2s^2\, 2p^6\, 3s^2\,3p^3$
14%
Solution:
After losing one electron, the atom will get a stable configuration and its second ionisation energy will be very high. Hence, option (b) is correct.