Question : Which of the following represents an alpha particle?
Option 1: 42He
Option 2: 24He
Option 3: 21He
Option 4: 11He
Correct Answer: 4 2 He
Solution : The correct option is 4 2 He.
An alpha particle is a type of subatomic particle consisting of two protons and two neutrons, and it is essentially a helium-4 nucleus. The symbol for an alpha particle is often written as 4 2 He, where 4 represents the mass number (sum of protons and neutrons), and 2 represents the atomic number (number of protons).
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