30
/it/
AIzaSyAYiBZKx7MnpbEhh9jyipgxe19OcubqV5w
April 1, 2024
Public Timelines
FAQ
Menu
Public Timelines
FAQ
For education
For educational institutions
For teachers
For students
Open cabinet
Creare
Close
Create a timeline
Public timelines
Library
FAQ
Scaricare
Export
Creare una copia
Premium
Integrare nel sito Web
Kashif,Aaron,Felix,Nestor
Modificare
è stato aggiornato 25 ott 2017
Dmitri Mendeley Timeline
0
0
425
Share
Autori
Created by
Kashif Naseer
List of Edits
Attachments
Comments
Eventi
1) Born in Tobolsk,Siberia(Russia)
2) Traveled to Moscow and St. Petersburg with his mother for education After 10 days mother died of tuberculosis
3) Scientist met in one of the first international chemistry conferences and decided hydrogen to be given the weight of one and all other elements would be compared to it
4) Returned to Russia Became a professor at Technical Institute in St. Petersburg Published Organic Chemistry Students were having difficulties understanding chemistry with no clear system or framework to explain relationships of the elements
6) Inspired by the card game solitaire he created element cards and attempts to arrange them with weight and properties on them into a single framework Info A story told that Mendeleev dream't all the elements fell into place as required and upon awakening he wrote it down and later drew a table of it. Unaware he arrange the elements in increasing atomic number order. Left blank spaces as placeholders predicting it for unknown elements that hasn't been discovered
7) a German chemist Julius Lothar Meyer published a paper describing the same organizations of the elements. The 2 chemist had similar backgrounds but Mendeleev got the credit because he published his findings first
8) Mendeleev noticed that when he put the atoms in order of atomic masses, some atoms were missing, so Mendeleev left spaces in the periodic table and within 15 years the missing elements were discovered confirming the acceptance of Mendeleev periodic table.
9) a new set of elements, the noble gases, were added to the table
10) Death(age 72) St. Petersburg
5) Began writing Principles of Chemistry to organize and explain elements
About & Feedback
Accordo
Privatezza
Biblioteca
2024
©
Time.Graphics
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
Excellent (Trustpilot Reviews)
Based on 115+ reviews
Write your own review on
Trustpilot.com
Comments