Electron configuration

What atom matches this electron configuration?
1s² 2s² 2p⁶ 3s²
Options: Neon, Magnesium, Aluminum, Potassium

Electron configuration for an oxygen atom?

How many electrons can the first energy level hold?

How many valence electrons does Chlorine have?

What do you start electron configuration with? Options: 1s², 1d¹⁰, 1f¹⁴, 1p⁶

There are 4 different types of subshells s,p,d,f

What is the electron configuration of Iodine?

The electron configuration of an atom is 1s²2s²2p⁶. The number of electrons in the atom is?

What atom matches this electron configuration? [Xe] 6s²4f¹⁴5d⁹

There are __ energy levels