33
/it/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
249156
21886
2
Create a timeline
Public Timelines
For education
For educational institutions
For teachers
For students
Cabinet
For educational institutions
For teachers
For students
Open cabinet
FAQ
Ricevere il Premium
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Accordo
Privatezza
FAQ
Support 24/7
Cabinet
Get premium
Donate
28 dic 1931 anni - James Chadwick - Confirms the existence of neutrons, which have no charge. Atomic nuclei contain neutrons and positively charged protons.
Aggiunto al nastro di tempo:
Chemistry timeline
By
Krysten Thompson
8 nov 2017
0
0
365
Data:
28 dic 1931 anni
Adesso
~ 93 years ago
About & Feedback
Accordo
Privatezza
FAQ
Support 24/7
Cabinet
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL
