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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? 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?
Name the gas which produces anode rays consisting of protons in the discharge tube experiment.
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 |
Complete the table given below
|
|
No. of protons |
No. of electrons |
No. of Neutrons |
Atomic Number |
Mass number |
| `""_17^35"CI"` |
|
|
|
|
|
| `""_17^37"CI"` |
|
|
|
|
|
Define: Proton
Define: Neutron
Explain in brief the experimental proof which led to the discovery of –
Protons
A proton can be defined as a ______.
