Nucleus of an atom whose atomic mass is 24 consists of
Correct answer: B. 12 protons and 12 neutrons
- A. 11 electrons, 11 protons and 13 neutrons
- B. 12 protons and 12 neutrons
- C. 11 electrons, 13 protons and 11 neutrons
- D. 11 protons and 13 electrons
Explanation
Atomic mass 24 is of Magnessium. It has 12 atomic charge , which means 12 protons and atomic mass 24. Therefore , 24 - 12 = 12 neutrons it contains.
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
What are the number of neutrons, protons and electrons in a neutral atom of 23592 U?
Isotopes are the atoms of the same element which contain equal number
If u and d represent up quark and down quark respectively then composition of Proton and Neutron can be written as:
As compared 12C atom, 14C atom has:
Which one of the following pair is of isobars?
Diameter of nucleus is approximately _.