Question

Write and explain any three triads given by dobereiner?

Answer 1

HEY DEAR USER _____

HERE IS UR ANSWER _____

❇ 1ST REAL ATTEMPT - BY JOHANN WOLFGANG DOBEREINER IN 1817 .

❇ HE TRIED TO ARRANGE KNOWN ELEMENTS INTO GROUPS OF THREE ( TRIADS ) .

❇ BASES OF CLASSIFICATION :-
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*-* WHEN WRITTEN IN INCREASING ORDER OF ATOMIC MASSES THE MASS OF MIDDLE ELEMENT WAS TOUGHLY THE AVERAGE OF THE MASSES OF THE OTHER ELEMENT .

❇ THEIR TRIADS ARE :-
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*-* LITHIUM - SODIUM - POTASSIUM .
CALCIUM - STRONTIUM - BARIUM .
CHLORINE - BROMINE - IODINE .

$<b>HOPE IT HELPS YOU ………<®>$

Answer 2

Hey dude,

Such triads—including chlorine-bromine-iodine, calcium-strontium-barium, and sulfur-selenium-tellurium—were noted by the German chemist J.W.

Döbereiner between 1817 and 1829. The triad was the earliest atomic-weight classification of the elements.

@CollinsKey