Sodium oxygen is an ionic compound, which means it forms a crystal lattice with alternating sodium and oxygen ions. Here's the formula and name:

Formula: Na₂O

Name: Sodium oxide

Explanation:

* Sodium (Na) is a metal in group 1 of the periodic table, meaning it tends to lose one electron to form a +1 cation (Na⁺).

* Oxygen (O) is a nonmetal in group 16, meaning it tends to gain two electrons to form a -2 anion (O²⁻).

To achieve electrical neutrality in the compound, we need two sodium ions (2 x +1 = +2) to balance the charge of one oxygen ion (-2). This leads to the formula Na₂O.