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Electronic configuration of the following with representation of arrangement of electrons:

{both ground as well as excited state}
1. boron
2. carbon
3. nitrogen
4. oxygen
5. fluorine



Electronic configuration of
 GS:1s² 2s² 2p¹
1st ES:1s² 2s¹ 2p²
 GS:1s² 2s² 2p²
1st ES:1s² 2s¹ 2p³
  GS:1s² 2s² 2p³
  GS:1s² 2s² 2p⁴
(v) fluorine
  GS:1s² 2s² 2p⁵

nitrogen , oxygen and fluorine do not have excited state as they cannot have more than two orbitals.
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