Multiple choice Boron was discovered by _______. Humphry Davy and J.L. Gay Lussac in 1808 Humphry Davy and L.J. Thenard in 1808 Humphry Davy, J.L. Gay Lussac and L.J. Thenard in 1808 Sir Humphry Davy in 1808 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Boron was isolated independently in 1808 by two separate groups: Sir Humphry Davy, and the team of Joseph Louis Gay-Lussac and Louis Jacques Thenard.