Solved Example on Neutrons
Example 1: Calculate the number of neutrons in the sodium atom.
Solution:
Atomic number of sodium (Na) is 11
Mass number of sodium is 23
Thus,
No. of neutrons = Mass Number − Atomic Number
= 23-11
= 12
Example 2: What is the atomic mass of Nitrogen?
Solution:
Let the atomic mass of Nitrogen be a.
Thus,
No. of Neutrons = Mass Number − Atomic Number
7 = A – 7
A = 14
Hence, the Atomic Mass of nitrogen is 14.
Neutrons
Neutrons are fundamental subatomic particles of the atom. An atom is made up of electrons, protons and neutrons. James Chadwick, an English physicist, discovered the neutron in 1932. Neutrons are particles with no charge and higher mass. They are represented by n. They reside inside the nucleus of the atom and along with protons they are called nucleons. Let’s learn about neutrons in detail in this article.
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