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Question
On the basis of electronic configuration, how will you identify the first and the last element of a period?
Solution
If the number of valence electron is 1 then the element is said to be the first element of a period, If the number of valence electrons are 8, the element is said to be the last element of a period.
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RELATED QUESTIONS
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the valency,
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|
Group 1 |
Group 2 |
Group 17 |
Group 18 |
|
|
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D |
|
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B |
C |
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A |
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E |
State which is most reactive (i) metal (ii) non-metal
