Magnesium has atomic number 12
draw diagram to show the distribution of electrons in the atom​

multiple allele inheritance is traits controlled by more than 2 alleles (ex: pigeons having 3 alleles of one gene govern their feather color).

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

it is b. absorbs thermal energy

one "light year" is the distance that light travels, through vacuum, in one julian year.   that's 365.25 days, of 24 hours each.