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A particle which is four times in mass a...

A particle which is four times in mass and two times in charge that of proton is called

A

Helium atom

B

An alpha particle

C

Deuteron

D

Tritium

Text Solution

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The correct Answer is:
To solve the question, "A particle which is four times in mass and two times in charge that of proton is called," we can follow these steps: ### Step 1: Understand the Properties of a Proton - A proton has a relative mass of 1 and a relative charge of +1. ### Step 2: Analyze the Given Particle - The problem states that the particle in question has: - Mass = 4 times that of a proton - Charge = 2 times that of a proton ### Step 3: Determine the Mass and Charge of the Given Particle - If the mass of the particle is 4 times that of a proton, then: - Mass of the particle = 4 (relative mass of proton) - If the charge of the particle is 2 times that of a proton, then: - Charge of the particle = +2 (relative charge of proton) ### Step 4: Identify the Particle - The particle that has a mass of 4 and a charge of +2 corresponds to the helium nucleus (He). - Specifically, when we remove the two electrons from a helium atom, we get a helium ion with a charge of +2, which is also referred to as an alpha particle. ### Step 5: Conclusion - Therefore, the particle which is four times in mass and two times in charge that of a proton is called an **alpha particle**. ### Final Answer The answer to the question is: **Alpha particle**. ---
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