The electron configuration of carbon atom in its excited state is [ 6C]
Answer Details
The electron configuration of an atom describes the arrangement of electrons in its energy levels or orbitals. The notation [ 6C ] means that the excited carbon atom has six electrons in its outermost energy level, which is the second energy level (n=2). The correct electron configuration for a carbon atom in its excited state is 1s22s12p2. The notation [ 6C ] can be understood as follows: the normal electron configuration for carbon is 1s22s22p2, meaning that it has four electrons in its outermost energy level. By exciting one of the 2s electrons to the empty 2p orbital, the atom now has a total of six electrons in the n=2 energy level, hence the notation [ 6C ]. Option D, 1s22s12px12py12pz1, represents the electron configuration of a carbon atom in its ground state.