Question

(((what do you mean by traids ))))
in perodic classification of the elements ​

Answer 1

Answer:

TRIAD IS A GROUP OF 3 ELEMENTS

DOBERNEIR'S TRIADS

HE ARRANGED 3 ELEMENTS IN SUCH A WAY THAT THE AVERAGE OF ATOMIC MASSES OF 1 AND 3 ELEMENTS WERE APPROXIMATELY EQUAL TO ATOMIC MASS OF 2 ELEMENT

HE WAS ONLY ABLE TO PLACE 9 ELEMENTS IN TRIADS. THIS WAS DRAWBACK

Answer 2

Answer:

Traid :-

The group of 3 elements having similar chemical properties is called as traid.

Dobereiner's law of traids states that, the atomic mass of the middle element of a traid is the arithmetic mean of the atomic masses of the other two elements.

Example - In the traid of lithium, sodium and potassium the atomic mass of lithium is 7 and that of potassium is 39.

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