JEE · NEET Previous Year Question
The second ionisation energies of and are in the order_____
Topic: JEE PYQ
Answer: B. Full step-by-step solution below.
- A
- B B > C > Be
- C
- D
Correct answer: B
Solution
(b) The second ionisation energy is the energy required to remove an electron from a cation in the gaseous state.Second ionisation energy is also affected by size, effective nuclear charge, and electron ic configuration.
Li has highest than because the second electron remove from stable noble gas configuration has higher than due to the extra stability of the subshell in the ion. Therefore, the correct order I.E will be : .
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