Hydrogen was discovered in 1766.
George Washington
1669
march 1781
1766,a young scientist named Henry Cavendish discoverd it.
i cant give the year but i can give this they were discoverd by indians.
A definite year cannot be put on it, but it is over 8000 years ago.
peru was discoverd around the turn of the 16th century
Remains of a carpic settlement old of 2300 years was discoverd here.
The ozone layer was discovered in the year 1913 by the scientists Charles Fabry and Henry Buisson.
me
no
Plutonium was discovered in the year of 1940. It was discovered by multiple scientists: Glenn Seaborg, Edwin McMillan, Arthur Wahl, and Joseph Kennedy.