Elements
How did Johann Dobereiner arrange the elements in group of three, what is it called?
Triads
What is the scientist's name?
Johann Dobereiner
How many elements did he discover at the time of the Dobereiner Triads?
He discovered around 53 elements
When was he born?
December 13, 1780
Name one of the triads, out of the three groups?
(That we have learnt in class)
lithium, sodium and potassium
What is the name of the first lighter invented called?
The Dobereiner's lamp
In 1817, what did dobereiner notices about strontium?
It had similar chemical properties to Calcium and Barium
when did he died?
March 24,1849
What is triad?
A Union or group of three
Johann Dobereiner was a ....
German chemist