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Calculate the number of particles presen...

Calculate the number of particles present in 0.1g electron.

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Number of electrons=`("total mass of electrons")/("Mass of one electron")`
`=(0.1g)/(9.11xx10^(-28)g)=1.0977xx10^(26)`.
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CHHAYA PUBLICATION-STRUCTURE OF ATOM-WARM UP EXERCISE
  1. How will you prove that electrons are negatively charged particles wit...

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  2. Explain the origin of cathode rays in the discharge tube.

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  3. Calculate the number of particles present in 0.1g electron.

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  4. Calculate the mass of 1 mol electron.

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  5. Explain why cathode rays are produced only at very low pressure of a g...

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  6. mention two uses of cathode ray tube in our daily life.

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  7. Calculate the charge of 1 mol electron.

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  8. What happens when high velocity cathode rays strike a tungsten foil?

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  9. The charge to mass ratio of an electron is 1836 times greater than tha...

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  10. What is the source of anode rays in discharge tube?

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  11. Two discharge tubes containing H(2) and O(2) gas respectively are subj...

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  12. A discharge tube containing H(2) gas at low pressure is subjected to h...

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  13. Explain the generation of the positively charged particle in the disch...

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  14. How many protons will be needed to fill a spherical vessel of volume 1...

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  15. Why was it necessary to consider the existence of neutrons in the nucl...

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  16. Who discovered neutrons?

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  17. Between proton or neutron which one is heavier?

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  18. Write the nuclear reaction for the emission of neutron. Indicate e/m v...

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  19. Mention the symbol, charge and names of the discoverers of positron, p...

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  20. Name the experiment that help us to determine the number of protons in...

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