JEE PYQ: S Block Elements Question 24
Question 24 - 2019 (09 Apr Shift 1)
The element having greatest difference between its first and second ionization energies, is:
(a) Ca (b) Sc (c) Ba (d) K
Show Answer
Answer: (d)
Solution
Alkali metals have high difference in the first and second ionisation energy as they achieve stable noble gas configuration after first ionisation. K is the alkali metal among the options.