Group comprising all metals is

A taxonomic group comprised of members of similar kingdoms is called

A taxonomic group comprised of members of similar kingdoms is called

A taxonomic group comprised of members of similar kingdoms is called

A taxonomic group comprised of members of similar kingdoms is called

Explain why the following statements are not correct? i) All groups contain both metals and non metals. ii) In group 1, reactivity decreases with increase in atomic number. iii) Elements in a period become more metallic with increasing atomic number. iv) Atoms of elements in the same group have the same number of electrons.

All akali metals are solids but hydrogen is a gas with diatomic molecules . Do you justify the inclusion of hydrogen in first group with alkali metals ?