Question

In group 17 electro negativity low why bp and mp increases down the grp

Answer 1

Because of as we go down in the group there is force of vander wall is increased and number of molecule and sizes of atom are also increased so..

Answer 2

$\bf\huge{ \green{Answer}}$

• The number of valence electrons in an atom increases down the group due to the increase in energy levels at progressively lower levels.

• Electronegativity therefore decreases down the group (At < I < Br < Cl < F).