How many inner shell electrons does an element in period 3 of the periodic table have?

Aforklift raises a 1,020 n crate 3.50 m up to a shelf. how much work is done by the forklift on the crate? the forklift does j of work on the crate.

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

How to tell if a molecule is polar or nonpolar with electronegativity