It is the number of positely charged nuclear particles ( protons ).
protons plus neutrons = atomic number
Number of neutrons = Atomic mass - Atomic number
them mass number of an element is the total amount of nuetrons and protons in the element , and the atomic number is the amount of protons ( and electrons) in the element simply subtract the atomic number from the mass number and you'll have the number of neutrons in the element hope this helped x
There is no average atomic number. The atomic number of an element is the number of protons in the nuclei of its atoms. It is a whole and finite number. The elements are arranged in order of increasing atomic number on the periodic table.
the atomic number of each isotope-apex;)
you look at either the atomic number or the number of electrons. That's the number of protons.
Number of protons
equal to number of protons
well you look at the periodic table of elements. the atomic number equals the number of protons. Then subtract the number of protons from the atomic mass (both protons and nuetrons have atomic mass units of 1 and electrons equal 0). That will give you the number of nuetrons.
You can calculate the number of neutrons an atom has by subtracting the atomic number (number of protons) from the atomic mass (rounded to the nearest whole number). Neutrons are the difference between these two values.
Atomic number is simply the number of protons in an atom. Each element has a unique atomic number (for example, hydrogen is always 1 and carbon is always 6).
To calculate the number of neutrons in boron, subtract the atomic number from the atomic mass. The atomic number of boron is 5, and the atomic mass is around 10.81. Therefore, boron has approximately 6 neutrons (10.81 - 5 = 5.81).