Identify an anomaly element that belongs to both group 1 and group 17.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Hydrogen.
The anomaly element that belongs to both Group 1 and Group 17 is Hydrogen. Hydrogen is positioned in Group 1 of the periodic table as an alkali metal but also exhibits properties similar to halogens in Group 17. It is unique due to its ability to form compounds resembling those of both alkali metals and halogens. For example, it forms hydrides similar to alkali metals and can also form halides like the halogens.