Answer: Magnesium and Bromine/MgBr2 = Ionic compounds
Explanation: When atoms form together they can form between Ionic Compounds and molecules; this could depend on if they're joined by Covalent bonds as well because when atoms form with Covalent bonds, it forms Molecules.
Answer:
On the placement of hydrogen and helium in the periodic system
H1=1
He2=2
Answer:
B sugar in water
Explanation:
because sugar dissolves in water while the others don't