Answer:
See below
Explanation:
First you have to count protons, neutrons and electrons for each atom.
A: 4p, 5n, 4e
B: 2p, 2n, 1e
C: 8p, 8n, 7e
D: 13p, 14n, 13e
E: 9p, 10n, 9e
F: 7p, 7n, 8e
If an atom has the same number of protons and electrons then it is neutral:
A, D and E are neutrals.
The mass of an atom is related to the number of protons and neutrons, the one with the largest amount has the greatest mass:
D has 27 protons + neutrons.
The atom name is related to the number of protons, you can look a periodic table and take the name of the atom with the same number of protons for each one of the given atoms.
A: Beryllium
B: Helium
C: Oxygen
D: Aluminium
E: Fluorine
F: Nitrogen
