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प्रश्न
The particle not present in an ordinary hydrogen atom is :
विकल्प
proton
neutron
nucleus
electron
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उत्तर
neutron
A hydrogen atom ` ""_1^1"H"`, has 1 proton and 1 electron, but it does not have any neutron.
APPEARS IN
संबंधित प्रश्न
Write true or false for the following statement
The central pad of the atom is called nucleus.
Give the following a suitable word/phrase
The sub-atomic particle with negative charge and negligible mass.
Give the following a suitable word/phrase.
The electrons present in the outermost shell.
Give the following a suitable word/phrase
Arrangement of electrons in the shells of an atom.
Tick the most appropriate answer.
In 1908, R A Millikan found the charge of an electron to be
- 1.6 x 10-19 C
- 1.6 x 10-15 C
- 1.4 x 10-19 C
- 1.6 x 19-16 C.
ANSWER IN DETAIL
Write a note on valence shell.
Define the term Nucleons.
With reference to the discovery of the structure of an atom, explain in brief – William Crookes experiment for the discovery of cathode rays, followed by – J.J. Thomsons experiment pertaining to the constituents of the cathode rays. State which sub-atomic particle was discovered from his experiment.
Explain in brief – Goldstein’s experiment which led to the discovery of the proton.
Select the correct answer from the choice in the bracket to complete the sentence:
An element ‘X’ has six electrons in its outer or valence shell. Its valency is __________.
