Answer
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Work Step by Step
These physical properties of group 2 elements are:
- low density (mass over volume)
- low melting points (except beryllium)
- low boiling points (except beryllium)
- soft and strong in their metal states.
- ductile.
- malleable.
- shiny and silvery as metals.
- dull appearance.
All alkaline earth metals react with the halogens (iodine) to produce the corresponding halides,
The Group 2 elements react with water to form hydroxides with the general formula $M(OH)_2$ and hydrogen gas.
All Group 2 elements tarnish in air to form a coating of the metal oxide. They react violently in pure oxygen producing a white ionic oxide.
Strontium is a group 2 element that does not occur as a free element due to its extreme reactivity.
Among the group 2 elements, radium is known to have the greatest metallic character .
