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What are the various letters used by Boh...

What are the various letters used by Bohr to represent electron shells in an atom ?

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(a) What are valence electrons ? Where are valence electrons situated in an atom ? (b) What is the number of valence electrons in the atoms of an element having atomicm number 13 ? Name the valence shell of this atom.

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What is the maximum number of electrons that can be present in the nth shell of an atom?

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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. What is the usual symbol for (a) an electron (b) a proton, and (c) a ...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. What is the absolute mass and charge of an electron ?

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  19. What important information is furnished about the nucleus of an atom b...

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  20. How was it shown that an atom has a lot of empty space within it ?

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