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Which of the following is not a chalcogen?
A.O
B.S
C.Se
D.P

seo-qna
Last updated date: 21st Jun 2024
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Answer
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Hint:In the given question firstly we have to categorize through the definition what exactly the chalcogen are. They are basically another name provided for the elements from the group 16. These elements have a common trend for the electronic configuration by which they are grouped. Now we can observe all of the elements except from the phosphorus which belongs to the group 15 of the periodic table of the modern periodic table.

Complete step by step answer:
In the given question we have to first find out the meaning of the chalcogens, what they are and what they mean.

So we can say that Chalcogen is basically another name that is given to the oxygen family from the periodic table. Now this is also popularly categorized as the group 16 of the table.

This is the group of elements which have the outermost shell as p subshell and that also have 6 electrons within it.

There are basically 5 elements in the group. It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po).

Now by this we can observe that P is not from the chalcogen family as it belongs to the group 15 .
Hence the correct option is option D.


Note:Often, oxygen is treated separately from the other chalcogens, sometimes even excluded from the scope of the term "chalcogen" altogether, due to its very different chemical behavior from sulfur, selenium, tellurium, and polonium.