Search

discovery year of period 1 elements

Input interpretation

period 1 elements | discovery year
period 1 elements | discovery year

Results

hydrogen | 1766 helium | 1868
hydrogen | 1766 helium | 1868
period 1 elements | discovery year | {1766, 1868} (median)
period 1 elements | discovery year | {1766, 1868} (median)

Timeline

Timeline
Timeline

Random Queries

HNO3 + NaOH = H2O + NaNO3
formula of arsenide anion vs arsenic(III) cation
formula string of 2,3-epoxypropionaldehyde vs 1-fluoro-4-nitrobenzene
(boiling point of barium)/(melting point of barium)
color of efremovite vs alunite
molar mass of magnesium sulfide vs scandium(III) bromide hydrate
DOT numbers of nickel carbonate vs lead(II) arsenate
4-methylbenzylmagnesium chloride
molar mass of nitrogen(I) cation
name of 2-chloro-1,1,1,2-tetrafluoroethane