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.

Hello.

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

Magnesium atomic number is 12 while Aluminium's is 13. This means 1 more proton and weights more than magnesium since proton and neutrons contribute to the weights of the atoms.  

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a- multicellular

b-eukaryotic

c-no cell wall

d-heterotrophic

e-autotrophic