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Atoms of elements are made up mainly of ...

Atoms of elements are made up mainly of protons, electrons and neutrons.
a) Which of these particles are present in the nucleus of atoms?
b) The discovery of which particle is related to the scientist .J. J. Thomson?
c) Name the positively. charged particles?
d) Name the scientist who proved that most of. the mass of an atom is concentrated in the nucleus?

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V PUBLICATION-Structure of Atom-QUESTION BANK
  1. Complete the table.

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  2. Draw the Bohr model of argon atom. (Atomic numberAr=18 )

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  3. Give reason for the following. a) atoms are electrically, neutral. b)...

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  4. In the atom of an element 7 electrons are present in the M shell. : Th...

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  5. An atom of aluminium (Al) has 13 electrons and 14 neutrons in it. a) ...

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  6. Some details of the atoms X and Y are given below. a) Find the mass nu...

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  7. Atomic number of an atom Z=17, A=35. a) Find the number of protons, ...

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  8. Symbols (not real symbols) of some.atoms are given. underset(8) overs...

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  9. True or false? . a) All particles in the atom have charge. b) Elect...

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  10. Look at their properties in the table. Try to fill in the blanks.

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  11. Some questions related to atoms are given below. Choose correct word f...

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  12. An element is represented as follows (Symbol is not real) underset(13...

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  13. The mass number of an element is 23 and its atomic number is 11 a) Fi...

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  14. An atom has three shells. If there are 4 electröns in the third shell,...

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  15. The atomic number of an element is 15 .its mass number is31. Write the...

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  16. Complete the table given below.

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  17. Fill suitably.

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  19. Choose the pairs of isotopes from the following. Symbols are. not re...

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  20. Match the following.

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