describe any four chemical properties of group no.1 and group no.2 elements of s block elements
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properties of group 1
Soft metals that can be cut with a knife.
Low density - can float on water.
Low melting points in comparison with other metals.
They react violently (in some cases) with water to form alkaline solutions - hence the name, alkali metals.
properties of grp 2
Silvery metals.
Higher melting and boiling points than Group I elements.
Less reactive than Group I elements. This is because it is more difficult to lose two electrons compared to losing just one electron.
Melting points and boiling points decrease down the group due to weaker forces of attraction between atoms.
Soft metals that can be cut with a knife.
Low density - can float on water.
Low melting points in comparison with other metals.
They react violently (in some cases) with water to form alkaline solutions - hence the name, alkali metals.
properties of grp 2
Silvery metals.
Higher melting and boiling points than Group I elements.
Less reactive than Group I elements. This is because it is more difficult to lose two electrons compared to losing just one electron.
Melting points and boiling points decrease down the group due to weaker forces of attraction between atoms.
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