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प्रश्न
What are nucleons? How many nucleons are present in phosphorus? Draw its structure.
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उत्तर
Nucleons: Particles which constitute the nucleus are called nucleons.
Protons and neutrons are the nucleons.
Atomic mass of phosphorus = 31
Atomic number = 15
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संबंधित प्रश्न
Fill in the blank
The ..........................of an atom is very hard and dense.
Give the following a suitable word/phrase.
The number of protons present in the nucleus of an atom.
Multiple Choice Questions
The number of electrons in an atom is equal to number of
Tick the most appropriate answer
Which one of the following scientists put forward the theory regarding the extra-nuclear structure of the atom?
- James Chadwick
- John Dalton
- Rutherford
- Niels Bohr
Which part of atom was discovered by Rutherford?
Choose the correct option
Rutherford's alpha-particle scattering experiment discovered
Where is the nucleus of an atom situated?
‘Electrons revolve around the nucleus in fixed orbits or shells called energy levels’. State how these energy levels are represented.
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
What is meant by the term nucleus
