Tag: P Block Elements Class 12 Notes

Group 17 of periodic table consists of five elements, i.e., fluorine, chlorine, bromine, iodine and astatine. These elements are called Halogens. Fluorine is most reactive and hence is also called super halogen. Astatine is radioactive and hence occurs in nature only in traces.

The elements of Nitrogen family i.e. group 15 of the periodic table are: nitrogen (N), phosphorous (P), arsenic (As), antimony (Sb) and bismuth (Bi). Collectively, group 15 elements are called pnictogens and their compounds are called pniconides. (It means suffocation producing elements)