(A) Hydrogen has $1s^1$ configuration. By gaining one electron,it achieves the $1s^2$ configuration,which is the configuration of the noble gas Helium

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

(A) Hydrogen has $1s^1$ configuration. By gaining one electron,it achieves the $1s^2$ configuration,which is the configuration of the noble gas Helium. Halogens $(ns^2 np^5)$ also require one electron to achieve a stable noble gas configuration. Therefore,hydrogen behaves like halogens.