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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
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.
What is Debereiner's law of triads? Explain with the help of one example of a Dobereiner's triad.
Can the following groups of elements be classified as Dobereiner's triads?
(a) Na, Si, Cl
(b) Be, Mg, Ca
Give reason for your answer.
(Atomic masses : Be 9 ; Na 23 ; Mg 24 ; Si 28 ; Cl 35.5 ; Ca 40)
In Dobereiner’s triads Li, Na, K, the atomic masses of Lithium and Potassium are 6.9 and 39.1 respectively, then what will be the atomic mass of sodium?
Can the following groups of elements be classified as Dobereiner's triad:
Na, Si, Cl
Atomic mass of Na - 23, Si - 28, Cl - 35.
Justify your answer.
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.
Find the odd one out and give its explanation.
According to Dobereiner’s triads rule, three elements in an increasing order of atomic mass shows _______.
Write the name.
The atom having the biggest atomic size from period 2.
If Dobereiner is related with ‘law of triads’, then Newlands is related with ______.
