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1.state Doberiener's law of triads2.state Newland's law of octaves3.state Mendeleev's periodic law4.state Moseley's modern periodic law |
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Answer» 1.according to DOBEREINER's law of traid's PROPERTIES of each traid were similar nd atomic mass of the middle element was ROUGHLY the average of the atomic masses of the other two ELEMENTS.2.according to newland's octaves the properties of every EIGHT element was similar to that of the first element.3. The properties of the elements are a periodic function of their atomic masses.4. The properties of elements are the periodic function of their atomic number. |
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