Question

use the electron configurations and the periodic table to answer the questions:
electron configuration diagram
which element is this?
options: fluorine (f), carbon (c), nitrogen (n), oxygen (o)

Explanation:

Step1: Analyze electron configuration

The orbital diagram shows the 1s, 2s, and 2p orbitals. The 1s orbital has 2 electrons (paired), 2s has 2 electrons (paired), and 2p has 3 unpaired electrons.

Step2: Determine electron count

Total electrons: \(2 (1s) + 2 (2s) + 3 (2p) = 7\).

Step3: Identify element

The element with atomic number 7 (7 electrons) is nitrogen (N), as nitrogen has electron configuration \(1s^2 2s^2 2p^3\) matching the orbital diagram.

Answer:

nitrogen (N)