What is the rate of dissolution?
how fast the solute dissolves in the solvent
the time it takes to form a saturated solution
the time it takes of 100 g of solute to dissolve
in 100 g of solvent

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.