Periodic Classification and Periodic Properties - Result Question 16
####13. The set representing the correct order of first ionisation potential is
(2001, 1M)
(a) $K>Na>Li$
(b) $Be>Mg>Ca$
(c) $B>C>N$
(d) $Ge>Si>C$
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Answer:
Correct Answer: 13. (d)
Solution:
- In a group, ionisation energy decreases down the group
$$ Be>Mg>Ca $$