Choose all the answers that apply. Magnesium (Mg) has 12 protons and 12 neutrons. Magnesium has.

an atomic weight of 12
an atomic number of 24
12 electrons
an atomic mass of 24
5 electron shells

Why is an elements atomic mass not listed as a whole number on the periodic table

What happens when an acid dissolves?

Joe shines white light into a bowl half full of water at an angle of incident of 27.5°. calculate the angle of refraction in the water given the indices of refraction for air and water are 1.00 and 1.36, respectively.