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, 08:30: AM

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  | 28th May, 2014, 10:30: AM