The temperature of a sample of matter is a measure of the * 1. total kinetic energy of its particles

2.average potential energy of
its particles

3.average kinetic energy of its
particles

4.total potential energy of its particles

Explanation:

3.average kinetic energy of its

particles

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.

they are all solids.