Electron Configurations & Orbital Notation

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

What electron configuration matches an oxygen atom? Options: 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵, 1s²2s²2p⁴, 1s²2s²2p⁶, 1s²2s²2p⁶3s²3p⁶4s²3d¹

How many electrons can the first energy level hold?

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

Which electron configuration belongs to Chlorine (Cl)? Options: 1s² 2s² 2p⁶ 3s² 3p⁵, 1s² 2s² 2p⁶ 3s² 3p⁶, 1s² 2s² 2p⁶ 3s² 3p⁷

This orbital diagram represents: C, B, N, O

This orbital diagram represents: C, B, N, O

What is incorrect about this orbital diagram?

Which element is pictured? Options: neon, fluorine, magnesium, argon

Which is associated with more energy? Options: 2p, 2s, 3p, 1s