How do you find the mass #, atomic #, # of protons, # of neutrons, # of electrons of a neutral atom? details!?

Question

the neutral atom is
15
....O
6
although the real look is more condenced & the periods are not there (just to keep O in place)

Im filling out a table for four neutral atoms.
The firtst column is already given.

B) given: mass number= 16
atomic number=8
needed: # of protons, neutrons, electrons, and the neutral atom.

C) Given: mass #= 37
# of electrons=17
needed: atomic #, # of protons, # of neutrons, and neutral atom

D) Given: # of neutrons= 11
# of electrons=12
Needed: neutal atom, mass number, atomic number, and # of protons

Answer 1

In your example the atomic # is 6, the mass # is 12. For the rest: the number of electrons = no of protons = atomic number. Atomic mass = proton + neutrons, so neutrons = atomic mass - atomic number.

Answer 2

you start by DOING YOUR OWN HOMEWORK open your book READ IT it will tell you