Question

identify the atom 1s² 2s² 2p⁴. oxygen aluminum hydrogen argon

Explanation:

Step1: Recall electron - configuration rules

The atomic number of an element is equal to the number of electrons in a neutral atom.

Step2: Calculate number of electrons

For the electron - configuration \(1s^{2}2s^{2}2p^{4}\), we sum the electrons in each sub - shell. \(2 + 2+4=8\).

Step3: Identify the element

Oxygen has an atomic number of 8, which means a neutral oxygen atom has 8 electrons. So the atom with the electron - configuration \(1s^{2}2s^{2}2p^{4}\) is oxygen.

Answer:

Oxygen