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प्रश्न
Multiple Choice Questions
The outermost shell of an atom is known as
विकल्प
valency
valence electrons
nucleus
valence shell
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उत्तर
valence shell
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संबंधित प्रश्न
Multiple Choice Questions
number of valence electrons present in magnesium is
Name three fundamental particles of the atom. Give the symbol with charge, on each particle.
Tick the most appropriate answer.
Which of the following scientists observed that cathode rays consists of negatively charged particles?
- John Dalton
- J J Thomson
- James Chadwick
- Democritus
Fill in the blank of the following statement :
The electron has _________ charge, the proton has _________ charge, and the neutron has _________ charge.
Compare a proton and a neutron in respect of mass and charge.
The particle not present in an ordinary hydrogen atom is :
Define the term Valence shell.
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
Draw a neat labelled diagram representing an atom. Name the three sub-atomic particles in the atom and represent them symbolically showing the mass and charge of each. State where the sub-atomic particles are present in the atom.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
