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(a) Which of the nuclear particles is pr...

(a) Which of the nuclear particles is present in the same fixed number of the atoms of any particular element ?
(b) What do we call this number which is characteristic of a particular element ?

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The correct Answer is:
(a) Protons (b) Atomic number
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LAKHMIR SINGH & MANJIT KAUR-STRUCTURE OF ATOM-Exercise
  1. How was it shown that an atom has a lot of empty space within it ?

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  2. Why is an atom neutral inspite of the presence of charged particles in...

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  3. (a) Which of the nuclear particles is present in the same fixed number...

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  4. What is a proton ? State its relative mass and charge.

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  5. What is a proton ? State its relative mass and charge.

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  6. How does a proton differ from an electron ?

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  7. State two observations which show that atom is not indivisible.

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  8. All the gases form cathode rays and anode rays when electricity is pas...

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  9. What do you understand by the term electronic configuration of an elem...

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  10. An element has an atomic number 12. How may electrons will be present ...

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  11. (a) What is the nucleus of an atom and what is the nature of charge on...

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  12. Name the particles used by Rutherford in his experiment on the discove...

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  13. An element has atomic number 13 and an atomic mass of 27 (a) How many...

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  14. Write the distribution of electrons in an atom of element whose atomic...

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  15. What is a neutron ? How does it differ from a neutron ?

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  16. Compare an electron, a proton and a neutron in respect of their relati...

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  17. What is a proton ? How does it differ from a neutron ?

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  18. Compare an electron and a proton in respect of mass and charge.

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  19. Compare a proton and a neutron in respect of mass and charge.

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  20. How does an electron differ from a neutron ?

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