33
/pt/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
3759159
344855
2
Create a timeline
Public Timelines
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
FAQ
Create a timeline
Public timelines
FAQ
About & FeedbackAcordoPrivacidadeFAQ
Support 24/7  
CabinetGet premium
Donate

1 jan 1829 ano - Döbereiner Developed 'triads', groups of 3 elements with similar properties. Lithium, sodium and potassium formed a triad. Calcium, strontium and barium formed a triad. Chlorine, bromine and iodine formed a triad.

Adicionado na linha do tempo:

Contributions to Periodic table

BySamuel Benjamin
13 fev 2020
0
0
223

Data:

1 jan 1829 ano
Agora
~ 196 years ago
About & FeedbackAcordoPrivacidadeFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL