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In .(13)^(27)Al the number of neutrons a...

In `._(13)^(27)Al` the number of neutrons are

A

14

B

13

C

27

D

40

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The correct Answer is:
A
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VGS PUBLICATION-BRILLIANT-WHAT IS INSIDE THE ATOM ?-OBJECTIVE TYPE QUESTIONS
  1. The valency of sulphur is

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  2. The valency of neon is

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  3. In .(13)^(27)Al the number of neutrons are

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  4. The number of nucleons is the

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  5. The …………. Isotope is used in the treatment of goitre.

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  6. Which of the following is an example of isotopes?

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  7. The mass of neutron is nearly equal to that of ……………

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  8. According the Thomson, the total ……………..of the atom is uniformaly dist...

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  9. Rutherford allowed the alpha particles of pass through ………… in his alp...

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  10. Alpha particles do not have ………………

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  11. Statement - I : Alpha particles consists of 2 protons. Statement - I...

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  12. Accoding to Bohr's model, electrons revolve around nucleus in …………….

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  13. If n = 3, it represents the ………………. Shell.

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  14. According to Rutherford, the mass of the atom is concentrated at ……………...

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  15. Electrons must ………….. Energy to move to a higher energy level.

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  16. Electrons must ………………… energy to move to a lower energy level.

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  17. According to Bohr, while electrons are revolving in ……………..

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  18. Bohr's model could not explain the spectra of ………………

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  19. The rules for distribution of electrons is given by …………….

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  20. Maximum of number of electrons that can be accommodated in M - shell i...

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