Method 1 Finding the Number of Neutrons in a Regular Atom
- Locate the element on the periodic table.
- Find the element's atomic number.
- Find the element's atomic weight.
- Round off the atomic weight to the nearest whole number to find the atomic mass.
- Subtract the atomic number from the atomic mass.
- Remember the formula.
In this way, how do you find the number of protons neutrons and electrons in an atom?
The number of electrons in a neutral atom is equal to the number of protons. The mass number of the atom (M) is equal to the sum of the number of protons and neutrons in the nucleus. The number of neutrons is equal to the difference between the mass number of the atom (M) and the atomic number (Z).
How do you find the number of electrons?
You can simply subtract the atomic number from the mass number in order to find the number of neutrons. If the atom is neutral, the number of electrons will be equal to the number of protons. 1. Your mass number is the total number of neutrons and protons within the atom.
How many protons neutrons and electrons are in chlorine 37?
An atom of chlorine-35 contains 18 neutrons (17 protons + 18 neutrons = 35 particles in the nucleus) while an atom of chlorine-37 contains 20 neutrons (17 protons + 20 neutrons = 37 particles in the nucleus). Adding or removing a neutron from an atom's nucleus creates isotopes of a particular element.