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Question

Two elements belonging to the same group form a covalent compound. Identify the probable atomic numbers of the elements.


A

16,8

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B

20,1

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C

16,9

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D

20,9

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Solution

The correct option is A

16,8


Explanation for correct option:

(A) 16,8

  • Sulphur (S) has atomic number 16 and Oxygen (O) has atomic number 8.
  • So, both belong to the same group i.e., group 16.
  • Thus these two elements can form covalent compounds.
  • Example - Sulphur dioxide (SO2)

Explanation for incorrect options:

(B) Elements having atomic number 20 and atomic number 1 does not belong to the same group.

(C) Elements having atomic number 16 and atomic number 9 does not belong to the same group.

(D) Elements having atomic number 20 and atomic number 9 does not belong to the same group.

Hence, the correct option is (A).


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