Which group of elements shows lowest ionization enthalpy? | CHEMISTRY - PERIODIC TRENDS IN PROPERTIES OF ELEMENTS | SolveeIt | Solveeit

Today, August 24

Question

Which group of elements shows lowest ionization enthalpy?

A

Alkali metals

B

Alkaline earth metals

C

Halogens

D

Noble gases

Answer

Alkali metals

Explanation

Solution

: Ionisation energy increases along a period. Alkali metals can most easily lose $ns^{1}$ electron to attain noble gas configuration.