The alkali earth metals have two valence electrons.
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As temperature increases, the particles will gain kinetic energy causing it to move more rapidly and randomly. However, this causes the gas to expand as the particles will have more energy to roam freely. Hence as temperature increases, Volume increases.
This is based on Charles' Law stating that the volume of a gas is directly proportional to its absolute temperature.
It would be in solid or liquid
Spectator ions are zero(0) due to change of chemical reaction and absence of ions above the compound.
