Question

what family number(s) is/are the noble gases. there may be more than one answer. 18 15 viia viiia

Explanation:

Noble gases are located in group 18 (or VIIIA in the old - style group numbering) of the periodic table. Group 15 elements are pnictogens and VIIA elements are halogens.

Answer:

A. 18
D. VIIIA