What mass of magnesium nitrate contains 500g of nitrate?

Name the element in group 17, period 2. (periodic table)

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

The most common form of matter in the universe