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प्रश्न
All the gases from cathode rays anode rays when electricity is passed through them :
What does the formation of anode rays tell us about the atoms?
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उत्तर
When a perforated cathode is used in a discharge tube, another set of rays travelling in the direction opposite to that of the cathode rays is seen. These rays are called anode rays. Formation of anode rays tells about the presence of protons in all the atoms.
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संबंधित प्रश्न
What is the positive charge on the nucleus of an atom due to?
What is a proton? State its relative mass and charge.
What is the absolute mass and charge of a proton?
Goldstein's experiments which involved passing high voltage electricity through gases at very low pressure resulted in the discovery of :
How does cathode ray differ from as anode rays?
Complete the table given below by identifying P, Q, R and S.
|
Element |
Symbol |
No. of Protons |
No. of neutrons |
No. of Electrons |
|
Sodium |
`""_11^23"NA"` |
11 |
P |
11 |
|
Chlorine |
`""_17^35"CI"` |
Q |
18 |
17 |
|
Uranium |
R |
92 |
146 |
92 |
|
S |
`""_9^19"F"` |
9 |
10 |
9 |
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`
Explain the following:
Mass of an atom is concentrated inside the nucleus of the atom.
Represent a neutron ‘n’ in term of its symbol showing the subscript and superscript value.
An atom differs from its ion in ______.
