Question

the gas that priestly discovered

Answer 1

oxygen he discovered and lavoiser named it as oxygen

Answer 2

Priestley discovered 10 new gases: nitric oxide (nitrous air), nitrogen dioxide (rednitrous vapour), nitrous oxide (inflammable nitrous air, later called “laughing gas”), hydrogen chloride (marine acid air), ammonia (alkaline air), sulfur dioxide (vitriolic acid air), silicon tetrafluoride (fluor acid air), nitrogen