periodic table timeline
Category: Altro
è stato aggiornato: 29 nov 2018
Autori
Created byMARIA FERNANDA GARCIA ROBLEDO
Attachments
Eventi
Greek Thinkers:
They thought the atom was composed of
water, fire, air and earth.Meyer:
To arrange 28 elements in 6 families.cannizaro:
he produced more accurate atomic weights
for the elements.Moseley:
demonstrated the relationship between the
atomic number and the nuclear charge of the
elements, called in his honor Moseley's Law.
Re-ordered the table by atomic numbers instead
of weight, modifying the periodic law.seaborg:
Isolating and identifying transuranium elements
in room 307 in Gilman Hall. Isolated radioactive
elements.
Found the treatment to the thyroid disorder.
Removed the heaviest elements from the
bottom of the periodic table, and named them
the actinide series.Dobereiner:
Arranged elements into groups of three that had
similar properties called triads.Lavoiser:
identified more than 30 elements and classified
them in metals nonmetals, metalloidsnewlands:
Arranged the elements in a table by their atomic
weights. Noted every 8th element is a repetition
of the first.Mendeleyev:
Published the periodic table and periodic law in
1869, forecasting the properties of missing
elements. Thought of as the sole originator of
the periodic table.Dechancourtois:
First person to list the known elements in order
of increasing weight of their atoms and to say
that similar electrons occurred at regular atomic
weight intervals.Courtines, Gamov, and Alexander:
created a 3D periodic table.
Comments