An α-particle contains:
Correct answer: C. "2" protons and "2" neutrons
- A. "1" proton and "1" neutron
- B. "3" protons and "3" neutrons
- C. "2" protons and "2" neutrons
- D. "4" protons and "4" neutrons
Explanation
α-particles are helium nuclei. The charge on them is +2e while their mass is 4 amu that is every α-particle has two protons and two neutrons.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Nuclear Physics
Atomic nuclei contain protons and neutrons, with nuclear size, mass defect and binding energy describing their stability. The work covers alpha, beta and gamma decay, decay equations, half-life and decay rate, along with radiation safety and medical applications such as imaging, radiotherapy and tracers.
Practise Nuclear Physics
1,254 free Nuclear Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Nuclear Physics questions
At the end of 14 minutes 1/16 of a sample of radioactive polonium remains. The corresponding half-life is:
The average distance covered by α-particle in the air before its ionizing power ceases is called its:
An α-particle is emitted from 88Ra226, what is the mass and atomic number of the daughter nucleus respectively?
Decay constant "λ"is given by:
The ionizing power when we compare α, β and γ rays is:
Which one of the following is formed during beta emission: