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Question
According to Dobereiner's triads, the atomic mass of the 2nd element is equal to the __________ of 1st and 3rd elements in that triad.
According to Dobereiner's triads, the atomic mass of the 2nd element is equal to the __________ of 1st and 3rd elements in that triad.
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Solution
The correct option is B Arithmetic Mean
Döbereiner's
triads were an
early attempt to sort the elements into some logical order by their physical
properties. It was by reported Johann Wolfgang Döbereiner's in
1817.
He also noted that quantifiable properties of elements (e.g. atomic mass) in a triad followed a trend whereby the value of the middle
element in the triad would be exactly or nearly equal to the arithmetic mean of values for that property of the other two elements.
So, the correct option is B.
Döbereiner's triads were an early attempt to sort the elements into some logical order by their physical properties. It was by reported Johann Wolfgang Döbereiner's in 1817.
He also noted that quantifiable properties of elements (e.g. atomic mass) in a triad followed a trend whereby the value of the middle
element in the triad would be exactly or nearly equal to the arithmetic mean of values for that property of the other two elements.
So, the correct option is B.
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