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प्रश्न
Define: Electron
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उत्तर
Electron = e = is subatomic particle revolving around the nucleus of an atom having
unit – ve charge, mass = 1/1840 of 1 hydrogen atom, and the number of electrons = number of protons.
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संबंधित प्रश्न
What is the positive charge on the nucleus of an atom due to?
Name the subatomic particle whose relative charge is : +1
What is a proton? How does it differ from a neutron?
(a) What are cathode rays? What is the nature of charge on cathode rays?
(b) Explain how, cathode rays are formed from the gas taken in the discharge tube.
(c) What conclusion is obtained from the fact that all the gases from cathode rays?
Write down the names of the particles represented by the following symbols and explain the meaning of superscript and subscript numbers attached `""_1"p"^1, ""_0"n"^1,""_-1"e"^0`
Complete the table given below
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No. of protons |
No. of electrons |
No. of Neutrons |
Atomic Number |
Mass number |
| `""_17^35"CI"` |
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| `""_17^37"CI"` |
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Explain the following:
Mass of an atom is concentrated inside the nucleus of the atom.
Represent an electron ‘e’ in term of its symbol showing the subscript and superscript value.
Is it possible for the atom of an element to have one electron, one proton and no neutron. If so, name the element.
What are fluorescent materials?
