Question

How does the chemical reactivity of elements vary in a

Group

Answer 1

Along a group, the chemical reactivity varies as:

• The valence electrons play a vital role in deciding the chemical properties of an element.
• The elements react to complete their octets.
• The metals have a tendency to lose electrons to form a bond and as the size of elements increase down the group, their chemical reactivity increase.
• While in non-metals the reactivity decrease down the group as the size increases.