Going down the group elements become more reactive
Elements become more reactive going down group two because
Atomic radius increases down the group - this increases distance and shielding which decreases electrostatic attraction
First ionisation energy decreases down the group - as outmost electrons are further from the nucleus so less energy is required for an electron to be removed
Melting point in group 2
Decreases down the group - due to metallic bonds becoming weaker as the size of the atom increases and the weaker the electrostatic forces of attraction are
Group 2 reaction with oxygen
Group 2 elements all react with oxygen to form a metal oxide
Group 2 reaction with water
Group 2 reaction with water forms an alkaline hydoxide and hydrogen gas
