Number of neutrons = mass number - number of protons
To find the number of neutrons in an atom, first find the atomic weight of the element and round that number to the nearest whole number. Then, find the atomic number of the element. Subtract that number from the atomic weight and the number of neutrons will be found.
iron
Look up the name on the periodic table and subtract the atomic number from the mass number (which is protons and neutrons). That will give you the number of neutrons.
Mass number = Number of Protons + Number of Neutrons
The mass number is the sum of protons and neutrons.
The mass number is the sum of protons and neutrons.
use a periodic table look at the atomic number
Sulfur has 16 neutrons. To find out how many neutrons an element has you subtract the atomic number of that element by the atomic mass. omg thank you so much
if you arent given the atomic numbert for an element - where could you find it?
You can find the number of neutrons present in any individual element by subtracting the atomic number from the mass number.
First, find its atomic mass on the periodic table and subtract the number of protons (element number) from it and there you go
the protons will be the atomic number, in this case 26. The neutrons depends on which isotope. The most common isotope is iron-56, so that will have 30 neutrons. If the element is written in symbolic notation, the number on the top, minus the number on the bottom is the number of neutrons.