how do u find the number of neutrons in an atom?
2006-08-30 12:50:12 · 6 answers · asked by sw33tem14 2 in Education & Reference ➔ Homework Help
Very simple.
http://education.jlab.org/qa/pen_number.html
2006-08-30 12:55:39 · answer #1 · answered by alwaysbombed 5 · 1⤊ 0⤋
Atomic mass minus atomic number will give you how many neutrons are in an atom. It is not always equal to the number or protons since hydrogen, the most abundant atom, is only a proton orbited by an electron. It does not have any neutrons.
2006-08-30 20:43:06 · answer #2 · answered by quntmphys238 6 · 0⤊ 0⤋
subtract the atomic number (the number of protons in the nucleus) from the atomic weight (protons and neutrons each have an atomic weight of 1 amu (atomic mass unit), electrons have an atomic weight of 0)
2006-08-30 19:56:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Lets take Oxygen for example
the atomic # for oxygen is 8.
the mass # is 16 (rounded)
all you have to do is subtract the mass # and the Atomic # ..
so your answer will be 8..
i hope that helps!
2006-08-30 22:15:03 · answer #4 · answered by JiS00 X0X0 2 · 0⤊ 0⤋
By the number of protons. If there are 5 protons, there are 5 neutrons.
2006-08-30 19:53:08 · answer #5 · answered by Jose 2 · 1⤊ 1⤋
count them!
2006-08-30 19:53:15 · answer #6 · answered by forjj 5 · 0⤊ 2⤋