Answer: CaF2
Explanation:
Calcium is a metal and has 2+ cation charge. While F us in group 7 with an oxidation of -1.
So. Ca²+ F- do the criss cross rule where the charge of the cation will be the subscript of the anion and vice versa. So the result is CaF2
Distance is how far something moves in a specific amount of time.
Gold’s molar mass is about 196 while aluminum is about 27, thus 50cm of gold has more mass
1050kg sorry Ik this is not correct