Chemistry question about charges

Question

A fluorine atom has 19 subatomic particles in the nucleus. If fluorine has 10 neutrons, write down the total charge of

a) the electrons of fluorine

b) the neutrons of fluorine

c) the protons of fluorine

d) the fluorine atom

Answer 1

19 subatomic particles

a) 9 electrons

b) 10 neutrons

c) 9 protons

d) -7 (because it has 7 valence electrons)

Answer 2

a) electrons = - (9 x 1.6 x 10^ -19 Coulombs)

b) neutrons = no charge

c) protons = + (9 x 1.6 x 10^ -19 Coulombs)

d) electrically neutral