ICSE Class 10 Answered
state the trend in chemical reactivity :
I) across the period left to right,
2) down the group
Asked by ch.satyanarayana112233 | 05 Oct, 2020, 11:21: AM
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 | 05 Oct, 2020, 12:51: PM
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