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  9. Q36

CGPSC 2022 · Question 36 of 100

Correctly match the following: | Elements | Valency | (a) | Silicon | (i) | 1 | (b) | Fluorine | (ii) | 2 | (c) | Aluminium | (iii) | 3 | (d) | Sulphur | (iv) | 4

Science & Tech

  1. A(a) - (iv), (b) - (iii), (c) - (ii), (d) - (i)
  2. B(a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)Correct
  3. C(a) - (iii), (b) - (iv), (c) - (i), (d) - (ii)
  4. D(a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)

Answer: B. (a) - (iv), (b) - (i), (c) - (iii), (d) - (ii)

Explanation

The correct matching of the elements with their respective valencies is: (a) Silicon — (iv) 4 (b) Fluorine — (i) 1 (c) Aluminium — (iii) 3 (d) Sulphur — (ii) 2 Detailed Explanation: The valency of an element is determined by the number of valence electrons (electrons in the outermost shell) and its tendency to gain, lose, or share electrons to complete its octet. (a) Silicon (Atomic Number = 14...

Source: CGPSC 2022 official paper

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