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Consider the following elements: Na, Ca, Al, K, Mg and Li.

  • Which of these elements belong to the 3rd period of the Modern Periodic Table?
  • Which of these elements belong to Group 1 of Modern Periodic Table?
  • Which of these elements show a valency of +3?

Asked by Topperlearning User 28th May 2014, 8:30 AM
Answered by Expert
Answer:

(a) Elements which belong to the 3rd period of the Modern Periodic Table: Na, Mg, Al. 

(b) Elements which belong to Group 1 of Modern Periodic Table are: Li, Na, and K 

(c) Al shows a valency of +3.

 

Answered by Expert 28th May 2014, 10:30 AM
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