Question

Why do elements of group 1 and 2 have low melting and boiling point?

Answer 1

Explanation:

Alkali Metals have lower melting and boiling Points

All Group 1 elements have one electron in their outermost shell which is held very weakly by the nucleus. ... The increasing atomic radius means weaker forces between the atoms and so a lower melting and boiling point.

Answer 2

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All Group 1 elements have one electron in their outermost shell which is held very weakly by the nucleus. ... It is these weaker attractive forces due to the large atomic radii between neighbouring atoms of Group 1 elements that result in lower melting and boiling points when compared to other metals.

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