Question

using your periodic table, choose the element whose neutral atoms have twelve electrons. al c mg there is not enough information to decide.

Explanation:

In a neutral atom, the number of electrons is equal to the atomic number. So, we need to find the element with atomic number 12. Looking at the periodic table:

• Al (aluminum) has an atomic number of 13.
• C (carbon) has an atomic number of 6.
• Mg (magnesium) has an atomic number of 12.

Answer:

Mg