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ICSE Class 10 Chemistry Question 6 of 25

Periodic Table, Periodic Properties and Variations of Properties — Question 16

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Question

Question 16

An element 13X combines with 17Y to form a compound. which of the following is true ?

P → X is a metal, Y is a metal.
Q → X is a metal, Y is a non-metal.
R → X losses electron(s), y gains electron(s).

  1. Only P
  2. Only Q
  3. Both P and Q
  4. Both Q and R
Answer

Both Q and R

Reason — Element X with an atomic number of 13 is Aluminium (Al), which is a metal. Element Y with an atomic number of 17 is Chlorine (Cl), which is a non-metal.
X being a metal tends to lose electrons to achieve a stable electron configuration and Y being a non-metal tends to gain electrons to achieve stable electron configuration. Hence, statements Q and R are true whereas statement P is false.