Which of these would best describe the structural difference between magnesium and aluminum?
a) magnesium has one more proton than aluminum.
b) magnesium has one less proton than aluminum.
c) magnesium's atomic mass is larger than aluminum's.
d) aluminum has more protons and fewer neutrons than magnesium.

The right answer is B) Magnesium has one less proton than aluminum.  

Magnesium is the chemical element of atomic number 12, Mg symbol.

Magnesium 24 is composed of 12 protons and 12 neutrons. Mg 25 and Mg 26 respectively have 13 and 14 neutrons.

Aluminum is the chemical element of atomic number 13, symbol Al. It belongs to group 13 of the periodic table and to the family of poor metals.

Aluminum 27 is composed of 13 protons and 14 neutrons.

answer; the correct answer is conflict- related aggression; +

allowed for the prediction of the properties of missing elements.