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103. Out of the three elements P, Q and R having atomic numbers 11, 17 and 19 respectively, which two elements will show similar properties and why? [Foreign 2014]

103. Out of the three elements P, Q and R having atomic numbers 11, 17 and 19 respectively, which two elements will show similar properties and why? [Foreign 2014]

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
one year ago
Answer: Explanation: P(11): 2,8,1 R(19): 2, 8, 8, 1 Q(17): 2, 8, 7 Elements P, R will show similar properties as they belong to they same group with valency 1 due to same number of valance electrons.

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