Question

The numbers $2,8,20,28,50,82$ and $126$ representing the number of protons in a nucleus are called.

• A. Loschmidt's numbers
• B. Mach numbers
• C. Reynold's numbers
• D. Magic numbers

Answer 1

The correct option is D Magic numbers

The numbers $2,8,20,28,50,82$ and $126$ representing the number of protons in a nucleus are called $\to$ magnetic number.

In nuclear physics a magnetic number is a number of nucleons (either protons or neutrons separately) such that they are arranged into complete shells within the atomic nucleus. The seven most widely recognized magic number as at are $2,8,20,28,50,82$ and $126$.