Question

If fluorine has 9 protons, 10 neutrons,and 10 electrons, it is called the ______.

a. fluorine atom
b. fluorine ion
c. fluorine isotope
d. fluoride ion

Answer 1

d. fluoride ion

Step-by-step explanation:

Fluorine has atomic number of 9 and atomic mass of 19, which corresponds to 9 protons and 10 neutrons (19 - 9). The neutral fluorine atom will have 9 electrons. Since there is 1 extra electron, it is considered fluoride ion, F-.