Question

THE TOTAL NUMBER OF COMPLETELY FILLED ORBITALS IN AN ATOM

OF NITROGEN IN THE GROUND STATE IS :

A) 1
B) 2
C) 3
D) 4

Answer 1

In an atom of nitrogen in its ground state, the total number of completely filled orbitals is two, which are the 1s and 2s orbitals.

Step-by-step explanation:

The total number of completely filled orbitals in an atom of nitrogen in the ground state is two. Nitrogen has an atomic number of seven, which means it has seven electrons. In its ground state, the electron configuration of nitrogen is 1s² 2s² 2p³.

This indicates that the 1s and 2s orbitals are completely filled, with two electrons each. The 2p orbitals have one electron each, spread across three orbitals, so none of the 2p orbitals are completely filled. Therefore, the correct answer is B) 2.