Electron configurations are for atoms in the ground state

Reference no: EM13688573

Problem- Which of these electron configurations are for atoms in the ground state? In excited states? Which are impossible?

1) 1s2 2s1

2) 1s2 2s2 2p3

3) [Ne] 3s2 3p3 4s1

4) [Ne] 3s2 3p6 4s3 3d2

5) [Ne] 3s2 3p6 4f4

6) 1s2 2s2 2p4 3s2

Here is the problem which I am struggling on, please help me

Reference no: EM13688573

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