Question

traid is group of this agreement 1) three 2) four 3) five
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Answer 1

Answer:

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.

Answer 2

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Answer:

1) three

triad is a group of arrangement consisting of three numbers example for a triad is the dobernier's triad which consists of three elements

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