Electron Configuration Of Sodium In Excited State

The first excited state is obtained by promoting a 3s electron to the 3p orbital to obtain the 1s 2 2s 2 2p 6 3p 1 configuration abbreviated as the 3p level. Explain why the electron configuration of 2 7 1 1 represents a sodium atom in an excited state it is in the excited state because the electrons have been moved to higher energy levels and do not fully fill the lower levels as an atom in the ground state would the second shell has moved to the fourth shell and not all 11 electrons are in their lowest energy level. In writing the electron configuration for sodium the first two electrons will go in the 1s orbital.

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When we write the configuration we ll put all 11 electrons in orbitals around the nucleus of the sodium atom.

Electron configuration of sodium in excited state. The ground state configuration is 2 8 18 3 promote an electron to make it excited 2 8 17 4 33 which statement describes the general trends in electronegativity and firstionization energy as the elements inperiod3 are considered in order from na to cl. The actual electron configuration of sodium is 1s2 2s2 2p6 3s1. Ground state for na. The first excited state is obtained by promoting a 3s electron to the 3p.

The excited state you refer to would be 1s2 2s2 2p5 3s2. A possible excited state for na. Since 1s can only hold two electrons the next 2 electrons for sodium go in the 2s orbital. The problem is that there would never be such an excited state for sodium.

The ionization energy of sodium is less than the energy needed to promote an electron from the 2p to the 3s and so you would never see an excited state of 1s2 2s2 2p5 3s2 or 2 7 2. The electron will return to the ground state and release the energy as electromagnetic radiation light of some wavelength. The nex six electrons will go in the 2p orbital. 1s2 2s2 2p6 3p1 the ground state configuration of the sodium atom is 1s2 2s2 2p6 3s1 as deduced from the aufbau principle.

Atoms can move from one configuration to another by absorbing or emitting energy. Of course the excited state is very temporary. The p orbital can hold up to six electrons. Any other configuration is an excited state.

As an example the ground state configuration of the sodium atom is 1s 2 2s 2 2p 6 3s 1 as deduced from the aufbau principle see below.