Question

Question 14
Which of the following elements would lose an electron easily?

(a) Mg
(b) Na
(c) K
(d) Ca

Answer 1

Option (c) is correct
Here, K has the maximum radius as it belongs to period 4 and is the first element of period 4. Due to its largest radius, the nuclear pull on the valence electron will be minimum, hence it will readily lose an electron.