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प्रश्न
Name the scientist who gave Law of triads in the early classification of elements.
उत्तर
Johann Dobereiner, a German chemist gave the Law of Triads in the early classification of elements.
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संबंधित प्रश्न
Did Dobereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
The arrangement of elements in a group of three is known as ________.
The modern periodic table has been evolved through the early attempts of Dobereiner, Newland and Mendeleev. List one advantage and one limitation or all the three attempts.
The three imaginary elements X, Y and Z represent a Dobernener's triad. If the atomic mass of element X is 14 and that of element Y is 46, then the atomic mass of element Z will be:
(a) 28
(b) 60
(c) 78
(d) 72
Can the following groups of elements be classified as Dobereiner's triad:
Be, Mg, Ca
Atomic mass of Be - 9, Mg - 24, Ca - 40.
Justify your answer.
State Dobereiner’s Law of Triads with suitable examples.
Dobereiner laid down the _______ rule.
According to Dobereiner’s triads rule, three elements in an increasing order of atomic mass shows _______.
If Dobereiner is related with ‘law of triads’, then Newlands is related with ______.
In Dobereiner’s triads, the atomic weight of the middle element is ______ the of the atomic masses of 1st and 3rd elements.
