Question

The electron configuration for Fluorine is 1s^2 2s^2 2p^5. How many total electrons does Fluorine have?

A) 2

B) 7

C) 10

D) 9

Answer 1

Fluorine has a total of 9 electrons, which is determined by adding the number of electrons in its electron configuration: 2 from 1s2, 2 from 2s2, and 5 from 2p5.

Step-by-step explanation:

The electron configuration for Fluorine is 1s2 2s2 2p5. By examining this configuration, we can count the number of electrons represented. The first energy level (represented by 1s) has 2 electrons, indicated by the superscript 2. The second energy level consists of the 2s subshell with 2 electrons and the 2p subshell with 5 electrons. Therefore, Fluorine has a total of 2 (1s) + 2 (2s) + 5 (2p) = 9 electrons. The correct answer is D) 9.