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Chemistry : Atom and Atomic Structure


Answer the following question(s) based on atom and atomic structure.

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Multiple choice

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1.

The smallest particle of an element which can take part in chemical reactions and may or may not exist independently is the

  compound

  neutron

  nucleus

  atom

  Half-n-half Clue
 

2.

Atoms of an element with the same number of protons but different number of neutrons in the nucleus are known as

  Isosters

  Twin Atoms

  Isotopes

  Isobars

  Half-n-half Clue
 

3.

The three fundamental particles of the atom are

  Mesons, Quarks and Anti-neutrino

  Positron, Neutrino and Gamma Rays

  Nucleus, Anti-quarks and Electrons

  Proton, Neutron and Electron

  Half-n-half Clue
 

4.

Neutrons are

  positively-charged particles with negligible mass.

  positively-charged particles with mass.

  neutral particles with mass.

  negatively-charged particles with negligible mass.

  Half-n-half Clue
 

5.

The sum of the numbers of the protons and neutrons in the atom of an element is known as

  Molecular Weight

  Mass Number

  Isotope Number

  Atomic Number

  Half-n-half Clue
 

6.

The particle discovered as a result of cathode ray experiments is the

  proton

  electron

  neutron

  nucleus

  Half-n-half Clue
 

7.

The charge on the electron was discovered by

  Mullikan

  J. J. Thomson

  Fermi

  Faraday

  Half-n-half Clue
 


 
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