The electron configuration of an atom is 1s² 2s² 2p².The number of occupied orbitals in this atom is A)1 B)2 C)3 D)4

Question

Quizplus · Accepted Answer

To determine the number of occupied orbitals, we need to count the total number of orbitals with electrons. 
In the given electron configuration, we have 1 electron in the 1s orbital, 2 electrons in the 2s orbital, and 6 electrons in the 2p orbitals. 
So, the total number of occupied orbitals is 1 + 1 + 6 = 8 orbitals. 
Therefore, the answer is D) 4, since there are 4 different types of orbitals (1s, 2s, 2px, 2py, 2pz) that have electrons.

The Electron Configuration of an Atom Is 1s2 2s2 2p2

The Electron Configuration of an Atom Is 1s² 2s² 2p²