Atomic Structure and Electron Configuration

AP Chemistry· difficulty 2/5

A neutral atom has its only occupied orbital fully filled with two paired electrons in 1s, while 2s and 2p remain empty.

If only the 1s box is filled with paired electrons (and all other shells empty), the atom is:

Explanation

A 1s^2 configuration with no other occupied orbitals corresponds to a neutral helium atom.

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