Question

which statement best describes the arrangement of electrons in an atom of fluorine (f)? (1 point) there are two electrons in the first energy level and seven electrons in the second energy level. there are two electrons in the first energy level and two electrons in the second energy level. there are five electrons in the first energy level and two electrons in the second energy level. there are seven electrons in the first energy level and two electrons in the second energy level. there are two electrons in the first energy level and five electrons in the second energy level.

Explanation:

Step1: Recall electron - shell capacity

The first energy level can hold a maximum of 2 electrons.

Step2: Determine number of electrons in fluorine

Fluorine has an atomic number of 9, which means it has 9 electrons. After filling the first energy level with 2 electrons, the remaining 9 - 2=7 electrons go to the second energy level.

Answer:

There are two electrons in the first energy level and seven electrons in the second energy level.