The numbers of neutrons present in a nucleus is given by:
Correct answer: C. N = A - Z
- A. N = A+Z
- B. N = AZ
- C. N = A - Z
- D. N = Z - A
Explanation
The number of neutrons is equal to the difference between the mass number of the atom (A) and the atomic number (Z).number of neutrons = mass number - atomic number.
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
The wavelength of beta rays is measured by:
Radiotherapy used in the treatment of cancer usually use gamma-rays from:
The half-life of a radioactive substance is 5 minutes. The amount of substance decayed in 20 min will be:
A sample of a radioactive element with initial mass of 24 gm decayed to 3 gm in 36 minutes. How much of the original sample remained after the first 12 minutes?
The existance of positron is discovered in the:
A sample of F-18 is used internally as a medical diagnostic tool to look for the effect of the positron decay (T1/2 = 110 min), how long does it take for 99% of the F-18 to decay?