Biography & Contributions
John Alexander Reina Newlands was born on November 26, 1837
Newlands was an English chemist
He formulated law of octaves
The periodic table which he formulated has contain periods and groups aligned in down side to table
In 1887 He got Davy medal
It is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are represented in order of increasing atomic number.
Periodic table is divided into periods and groups and it comprises of 18 columns and 7 rows.
The total number of periodic table elements is 118.
Periodic table Blocks
- s-block elements
- p-block elements
- d-block elements
- f-block elements
Newland's law of octaves
Newland's arrangement was a grouping of the elements in increasing atomic weights (starting with lithium) in horizontal rows of eight elements, with each new row directly beneath the previous one.
Some important things you didn't know about the periodic table
- Periodic table of elements created as a giant cheat sheet
- To determine those weights, scientists had passed currents through various solutions to break them up into their constituent atoms. According to battery polarity the atoms of one element and atoms of another moved to opposite directions to each other. Later all atoms are gathered weighed.
- There are 90 elements on the periodic table that occur in nature. All of the other elements are artificially synthesized elements.
- Technetium was the first element to be made artificially
- New version of periodic table was approved 19 February 2010.
- Scientists are working on creating and verifying element 120
- The only letter that does not appear anywhere on the periodic table is the letter J.
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