Why does group 7 have low boiling points?

Halogens are nonmetals in group 17 (or VII) of the periodic table. Down the group, atom size increases. As a diatomic molecule, fluorine has the weakest bond due to repulsion between electrons of the small atoms. Due to increased strength of Van der Waals forces down the group, the boiling points of halogens increase.

Do group 7 elements have low melting and boiling points?

So group seven, aka the halogens. Elements in group seven have a number of similar properties, most importantly they have low melting and boiling points. This is of course a typical property of non-metals.

Why the melting points of the elements decrease down group 1 and increase down group 7?

This attraction is caused by the correlated motion of electrons. With increasing amount of electrons, there can be more correlated motion and hence there is a stronger interaction between the molecules and an increasing melting / boiling point when you go down in group 7.

Why do halogens have low melting point?

Due to weak van der Waals forces of attraction.

Why does the melting point increase in group 7?

In group 7, the further down the group an element is, the higher its melting point and boiling point . This is because, going down group 7: the molecules become larger. the intermolecular forces become stronger.

What is the trend in melting points in group 7?

The melting points and boiling points of the halogens increase going down group 7. This is because, going down group 7: the molecules become larger. more energy is needed to overcome these forces.

Why does group 7 have low boiling points?