Which of the following elements will have the lowest first ionisation energy?
Options
(a) Li
(b) Mg
(c) Ca
(d) Rb
Correct Answer:
Rb
Explanation:
Rb belongs to I-A group and has maximum size. Hence, has lowest IE₁.
Which of the following elements will have the lowest first ionisation energy?
(a) Li
(b) Mg
(c) Ca
(d) Rb
Rb
Rb belongs to I-A group and has maximum size. Hence, has lowest IE₁.