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Who discovered electron?...

Who discovered electron?

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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. Name the three sub-atomic particles of an atom.

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  2. Name the negatively charged particles present in the atoms of all the ...

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  3. Who discovered electron?

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  4. What is the usual symbol for (a) an electron (b) a proton, and (c) a ...

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  5. Name the central part of an atom where protons and neutrons are held t...

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  6. What are the various letters used by Bohr to represent electron shells...

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  7. Name the particles which actually determine the mass of an atom.

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  8. Name the positively charged particle present in the atoms of all the e...

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  9. What is the electronic configuration of a hydrogen atom ?

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  10. How many times is a proton heavier than an electron ?

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  11. Name the gas which produces anode rays consisting of protons in the di...

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  12. Which part of an atom was discovered by Rutherford's alpha particle sc...

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  13. What is the positive charge on the nucleus of an atom due to ?

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  14. State the number of electrons present in the outermost shell of the at...

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  15. Which shell of an atom can accommodate a maximum of : (a) 8 electron...

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  16. Name the shell of an atom which can accommodate a maximum of : (a) 2...

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  17. Which subatomic particle was discovered by : (i) Chadwick ? (ii) Tho...

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  18. Name the subatomic particle whose relative charge is : (a) +1 (b) -1...

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  19. Fill in the blanks in the following statements : (a) The number of p...

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  20. What is an electron ? State its relative mass and charge.

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