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Atomic number of an element represents:...

Atomic number of an element represents:

A

number of neutrons in the nucleus

B

atomic mass of an element

C

valency of an element

D

number of protons in the nucleus.

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The correct Answer is:
D
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OP TANDON-ATOMIC STRUCTURE -Questions with single correct Answer
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  2. The charge on electron was discovered by

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  3. Atomic number of an element represents:

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  4. Rutherford's experiment on the scattering of alpha particle showed for...

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  5. Rutherford's scattering experiment is related to the size of the

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  6. When alpha particles are sent through a thin metal foil, most of them ...

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  7. The radius of an atomic nucleus is of the order of

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  8. The size of atomic nucleus is of the order of............ m and size ...

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  9. Atom consist of electrons , protons and neutrons . If the mass attribu...

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  10. A light whose frequency is equal to 6xx10^(14)Hz is incident on a meta...

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  11. The nuclear size is measured in units of

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  12. The highest value of e/m of anode rays has been observed when the disc...

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  13. Which of the following atoms contains the least number of neutrons?

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  14. Which of the following properties of an element is a whole number ?

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  15. The increasing order (lowest first) for the values of e//m (charge//ma...

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  16. The mass of the neutron is of the order of

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  17. The atoms of various isotopes of a particular element differ from each...

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  18. Which of the following conditions is incorrect for a well behaved wave...

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  19. Atomic mass of an element is not necessarily a whole number because

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  20. Nucleons are:

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