fluorine
K, or potassium, has a mass number of 19. Fluorine is a non metal element. Mass number of it is 19. No, mass number for potassium is not 19. That is the atomic number.
Fluorine is a metal element. Atomic Mass of it is 19.
Fluorine is a meta element. Atomic mass of it is 19.
Fluorine is a non metal element. Atomic mass number of it is 19.
Fluorine is a non metal element. Atomic mass of it is 19.
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Mass number of it is 19.
The fluorine-19 isotope.
19
Fluorine is a non metal element. Mass number of it is 19.
Fluorine is a non metal element. Atomic mass number of it is 19.
Fluorine is a non metal element. Atomic mass number of it is 19.