I think it’s 2.45, not 100% sure
Isotope- variation of an element
Sixteen- atomic number of oxygen
The reactivity of a metal is determined by these things.
Firstly, the number of electrons in the outer shell; the fewer the number of electrons in the outer shell, the more reactive the metal.
The number of electron shells also affects reactivity, the more electron shells there are, the more reactive the metal.
8.Carbonate tetranitride
9.Zinc chloride
10.Sodium cyanide
11.Magnesium Phosphate
