Question

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

Answer 1

Answer : The correct electronic configuration of sodium atom is,

$1s^22s^22p^63s^1$

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,

$1s^22s^22p^63s^1$

Answer 2

1s2 2s2 2p6 3s1 is the electron configuration for Na