PDF chapter test TRY NOW
Identify the three related matching word answers:
Example:
Dobereiner :: German :: Law of triads
Answer variants:
Hydrogen
No proper position
Calcium
John Newlands
\(56\) Elements
Law of octaves
Non-metallic
Hint Select the author of the law, at the time of elements and the name of the law.
Option I - :: ::
Hint Select the element, positon and their property.
Option II - :: ::
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