How does the ionisation energy of 1st group elements vary ? | Chemistry | SolveeIt | Solveeit

Today, August 18

Question

How does the ionisation energy of 1st group elements vary ?

A

increases down the group

B

decreases down the group

C

remains unchanged

D

variation is not regular

Answer

decreases down the group

Explanation

Solution

Coinage metals are Cu, Ag, Au. Their outermost electronic configurations are (n-1) $d^{10}\, ns^1$