Question

i. Which one of the following statement is correct?
a) All groups contain both metals and non metals.
b) In group 17, reactivity decreases down the group.
c) In group 1, reactivity decreases down the group.
d)Atoms of same group have same number of electrons
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Answer 1

In case of a group, reactivity increases on going down since the tendency to lose electrons increases but for non-metals, reactivity decreases on going down the group as the tendency to gain electrons decreases down the group.Answer:1. S block and D block are metals P block is metals non metal and metalloids2.