Question

state how density and melting points of elements varies across a period and down a group​

Answer 1

Answer:

Explanation: Density, in general, increases with increase in atomic number. As such density increases as we move down a group from top to bottom. ... only metals, m.p. decreases down the group while in groups which contain only non-metals, m.p. increases down the group.

Answer 2

Answer:

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