As magma cools, the first minerals to are rich in iron, calcium, and magnesium.

The first minerals to crystallize are usually those rich in iron, calcium and magnesium.

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

The total number of nucleons