To do this computation for each of the four metals, you needed
several measurements.

All the elements are arranged by melting points on the periodic table. in row they go from metals to gasses. in the row from sodium to argon, sodium is more reactive than the one on its right, magnesium.

Yeah, but what are you trying to ask?

Not a  mixture of two common elements that can be separated by physical means.

Gamma waves is the answer