William Ramsey was determined to discover new elements. In collaboration with Lord Rayleigh, and building on the work of Henry Cavendish, Ramsey
isolated an unknown gas from a sample of air. Further study showed that
the unknown gas was inert (unreactive) because it would not react with
any known substances. Following the discovery, Ramsey continued to
search for inert (unreactive) gases. His work allowed for precise
measurement and the placement of all of these gases in the same group
on the Periodic Table. Based on the information provided, what group of
elements did William Ramsey discover?*
Group 18 (Noble Gases)
Group 1 (Alkali Metals)
O Group 17 (Halogens)
Group 15 (Prictogens)