ICSE Class 9 Answered
What is Dobereiner's law of traid
Asked by abhishekoraon2005 | 27 Aug, 2019, 07:24: PM
Expert Answer
Dobereiner’s Law of Triads:
When elements are arranged in the order of their increasing atomic masses, the atomic mass of the middle element was approximately the mean of the atomic masses of the other two elements.
For example: Consider the triad of lithium, sodium and potassium. The atomic mass of sodium is the mean of the atomic masses of lithium and potassium.
|
Element |
Atomic Mass |
|
Lithium |
6.9 |
|
Sodium |
Atomic mass of Na = |
|
Potassium |
39 |
Answered by Sheetal Kolte | 28 Aug, 2019, 10:08: AM
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