state the trend in chemical reactivity : I) across the period left to right, 2) down the group

Asked by ch.satyanarayana112233 | 5th Oct, 2020, 11:21: AM

Expert Answer:

Across a period

On moving from left to right in a period, the chemical reactivity of elements first decreases and then increases.

Down a group

The reactivity in metals increases on going down the group because the chemical reactivity in metals depends on the tendency to lose electrons.

The chemical reactivity of non-metals decreases on going down the group as it depends on the tendency to gain electrons.

Answered by Ramandeep | 5th Oct, 2020, 12:51: PM