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The black circles in the model represent...

The black circles in the model represent neutrons. What do the white circles represent?

A

electrons

B

isotopes

C

nuclei

D

protons

Text Solution

Verified by Experts

The correct Answer is:
D
protons
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S CHAND IIT JEE FOUNDATION-ATOMIC STRUCTURE-QUESTION BANK-20
  1. All matter is made up of atoms. Which sentence correctly describes ato...

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  2. What are the negatively charged particle inside an atom called? Use...

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  3. The black circles in the model represent neutrons. What do the white c...

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  4. The atomic number of an element is determined by

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  5. Which of the following particles has no electric charge?

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  6. How many protons does an atom with an atomic number of 23 and a mass n...

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  7. Which of the following determines the identity of an element?

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  8. Isotopes exist because atoms of the same element can have different nu...

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  9. Which of the following pieces of equipment was used by J.J. Thomson to...

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  10. Which one of the following is true of a neutron?

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  11. The ratio between the neutrons in C and Si with respect to atomic mass...

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  12. The number of electrons in the atom of an element X is 18 and the numb...

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  13. An atom differs from its ion in

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  14. The least reactive element among the following is

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  15. The diagram given below represents an atom of

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  16. The number of valence electrons in is ""(15)^(31)X is

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  17. Which of the following particles is largely responsible for the chemic...

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  18. Which of the following atoms do not usually form bonds?

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  19. Which types of atoms usually become negative ions?

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  20. Which element has a full outermosť energy level containing only two el...

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