In the long form of the periodic table, the valence shell electronic configuration of 5s^25p^4 corresponds to the element present in:

JEE Main 2015 Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main 2015

In the long form of the periodic table, the valence shell electronic configuration of corresponds to the element present in:

(1)Group 16 and period 5Correct
(2)Group 17 and period 5
(3)Group 16 and period 6
(4)Group 17 and period 6

Answer: (1)

Solution

The highest principal quantum number is 5, so the element lies in period 5. For a p-block element the group number is $10 + (number of ns + np electrons) = 10 + (2+4)

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Question ID VK-115256