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CBSE Class 10 Answered

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 | 28 May, 2014, 08:30: AM
answered-by-expert 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 | 28 May, 2014, 10:30: AM

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