Isotopes means the addition of additional _ in the same proton number.
Correct answer: C. Neutrons
- A. Protons
- B. Electron
- C. Neutrons
- D. All of them
Explanation
Option C is correct since the isotopes are defined as elements having the same proton number but different nucleon numbers. This difference in nucleon numbers is due to the neutrons.Option A is incorrect since proton numbers are the same in isotopes of the same element.Option B is incorrect since electrons remain the same in isotopes of the same elements. The proton number of unionized species is equal to its number of electrons.Option D is incorrect since it states all of them, which is not the case.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Composition of Atomic Nuclei
Atomic nuclei contain positively charged protons and electrically neutral neutrons, collectively called nucleons. Questions use atomic number, mass number and nuclear notation to identify isotopes, isobars and isotones, and may connect nuclear composition with nuclear charge, mass defect, binding energy and the stability of the nucleus.
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 Composition of Atomic Nuclei questions
The radius R of a nucleus is given by
If a nucleus with 198 atomic masses releases an alpha particle, its new mass becomes _.
The radioactive isotope of Carbon is
Isotopes mean the elements have the same:
Isotopes of an element have a different number of:
The binding per nucleon of deuteron (21H) and helium nucleus (42He) are 1.1 MeV and 7 MeV respectively. If two deuterons merge to form a single helium nucleus, the energy released will be: