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The number of valence electrons in is ""...

The number of valence electrons in is `""_(15)^(31)X` is

A

1

B

7

C

6

D

5

Text Solution

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The correct Answer is:
D
5
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S CHAND IIT JEE FOUNDATION-ATOMIC STRUCTURE-QUESTION BANK-20
  1. The least reactive element among the following is

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  2. The diagram given below represents an atom of

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

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

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

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  6. Which types of atoms usually become negative ions?

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

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  8. What type of element tends to lose electrons when it forms bonds?

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  9. Write the electronic configuration, number of valence electrons and cl...

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  10. Which of the following describes what happens when an atom becomes an ...

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  11. Which pair of atoms can form an ionic bond?

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  12. The atomic number of an element is 15. Hence, it will show a valency o...

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  13. The valency of which of the elements is zero?

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  14. Which of the following statements is always correct?

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  15. The number of valence electrons present in noble gases is:

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  16. Oxygen has an atomic number of 8. Which of the following could form th...

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  17. An atom of element X contains 3 protons, 3 electrons and 4 neutrons: ...

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  18. An atom of element X contains 3 protons, 3 electrons and 4 neutrons: ...

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  19. An atom of element X contains 3 protons, 3 electrons and 4 neutrons: ...

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  20. An atom of element X contains 3 protons, 3 electrons and 4 neutrons: ...

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