Question

Name the particles given below, stating clearly the meaning of the numbers represented in the super-script and sub-script.

${}_{12}{}^{}\mathrm{Mg}$²⁴

Answer 1

Magnesium: It is a chemical element with the symbol Mg and atomic number 12.

• it is one of the alkaline-earth metals of group 2 of the periodic table and the lightest structural metal.
• it is one of the elements essential to all cellular life.
• It is a shiny gray solid that shares many physical and chemical properties with the other five alkaline earth metals.

Super-script number: these superscript numbers show their mass number.

• A plus or minus sign in superscript after the chemical symbol shows this charge.

Subscript number: these numbers show the atomic number.

Thus, in ${}_{12}{}^{24}\mathrm{Mg}^{}$ 12 is sub-script and 24 is super-script.