Chemistry · Periodic Classification of Elements
According to Dobereiner's Law of Triads, _________ .
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- 1the arithmetic mean of the atomic masses of the second and the third elements of the triad is equal to that of the first element
- 2the arithmetic mean of the atomic masses of the first and the third elements of the triad is approximately equal to that of the second element✓
- 3the sum of atomic masses of the first and the second elements of the triad is equal to that of the third element
- 4the sum of atomic masses of the first and the third elements of the triad is equal to that of the second element
Correct answer
the arithmetic mean of the atomic masses of the first and the third elements of the triad is approximately equal to that of the second element
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