The answer is: 2s and 2p orbitals.
Carbon (C) is a chemical element with atomic number 6. It has 6 protons and 6 electrons.
Electron configuration for carbon: ₆C 1s² 2s² 2p².
Valence electrons are in 2s and 2p orbitals.
There is one pair of electrons in 2s orbital and two lone electrons in 2p orbital with the same electron spin.
Carbon is in group 14 of periodic table group.