Chemistry (11th Grade)
Atomic Orbitals
What is the correct order of filling atomic orbitals according to the Aufbau principle?
1s, 2s, 2p, 3s, 3p, 4s, 3d
1s, 2s, 3s, 2p, 3p, 4s, 3d
1s, 2p, 2s, 3s, 3p, 4s, 3d
1s, 2s, 3s, 4s, 3p, 3d, 2p
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