Answer:
- Both fitth electons are located on a 2p orbital.
Explanation:
The electrons fill the orbitals of the atom in increasing order of energy level. Using Aufbau's mnemonic rule you can find the order of filling:
- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ . . .
Thus, the firs two electrons are located on the 1s orbital, the next two electrons are on the 2s orbital, and the the fifth, electron of both boron and carbon is located on a 2p orbital.
