What is the atomic number of neon?
The atomic number is the number of protons in the nucleus, so the atomic number is
The mass number is the total number of nucleons, which is the number of protons plus the number of neutrons.
We're not given how many neutrons are in the atom, so we can't necessarily know this..
Additionally, if we wanted to figure out the ionic charge of this atom, we subtract the number of electrons from the number of protons:
#"ionic charge" = 10-12 = ul(-2#
The NEUTRAL element contains precisely the same number of negatively charged extra-nuclear particles, that are conceived to whizz about the nuclear core; and of course these are the
Atomic mass depends on the number of nucular particles, the aforementioned protons, but also
Historically, the electrons were assigned a negative electric charge. It would have been so much more convenient, had electrons been assigned a POSITIVE charge, and thus protons would have therefore been assigned a NEGATIVE charge. It would have saved generations of quantum chemists from getting the right magnitude but wrong sign in their answer, just because they counted odd instead of even or vice versa in their calculations on many electron systems. Of course, the particle physicists would complain, but they are weird enuff, and few enuff in number to deal with the change. C'est la vie.
The atomic number of an element is equal to the number of protons in its nucleus. So here it is
If the number
Atomic number is
Mass number is
The atom could be described as: