Which statement correctly describes a trend down Group 2 of the Periodic Table from magnesium to barium?
The first ionisation energy of the elements increases.
The solubility of the hydroxides, M(OH)2\text{M(OH)}_2M(OH)2, increases.
The solubility of the sulfates, MSO4\text{MSO}_4MSO4, increases.
The reducing power of the metal elements decreases.
