Public Timelines

For educational institutions For teachers For students Cabinet

For educational institutions For teachers For students Open cabinet

Create a timeline

Public timelines

About & Feedback Соглашение Приватность FAQ

Cabinet Get premium

Donate

4 апр 1864 г. - Lothar Meyer

Описание:

Classified elements into six families by their valence.

Добавлено на ленту времени:

scientific atom timeline

11 дек 2018

0

0

353

Дата:

4 апр 1864 г.

Сейчас

~ 161 г назад

About & Feedback Соглашение Приватность FAQ

Cabinet Get premium

Donate

The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.

Secured with SSL