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
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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