41
/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
May 31, 2026
249156
21886
2
Create a timeline
Public Timelines
For organizations
For companies
For educational institutions
For teachers
For students
Dashboard
For educational institutions
For teachers
For students
Dashboard
FAQ
Close
Create a timeline
Public timelines
FAQ
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Dashboard
Get premium
Donate
dec 28, 1931 - James Chadwick - Confirms the existence of neutrons, which have no charge. Atomic nuclei contain neutrons and positively charged protons.
Added to timeline:
Chemistry timeline
By
Krysten Thompson
8 Nov 2017
0
0
381
Date:
dec 28, 1931
Now
~ 94 years ago
About & Feedback
Terms
Privacy
FAQ
Support 24/7
Dashboard
Get premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL