The electron configuration notation for Na is:o 1s22s22p63s21s 2s 2p 3s1s22s22p61s22s22p

Answer : The correct electronic configuration of sodium atom is,
[tex]1s^22s^22p^63s^1[/tex]
Explanation :
Electronic configuration : It is defined as the representation of electrons around the nucleus of an atom.
Number of electrons in an atom are determined by the electronic configuration.
Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.
The given atom is, sodium (Na)
Sodium is the 11th element which belong to period 1.
The electronic configuration of sodium atom is,
[tex]1s^22s^22p^63s^1[/tex]