Question

properties of Mendeleev's periodic table​

Answer 1

Answer:

mendeleev periodic law states that the property of element are the periodic function of their atomic mass.

• mendeleev left some blank spaces for undiscovered element s.
• mandaleev predicted the discovery of some element and name them as eka boron ,eka aluminium and eka silicon.
• noble gas discovered later kulvi place without disturbing the existing order.

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Answer 2

Answer:

1.Mendeleev arranged the elements in order of increasing atomic masses.

2. Mendeleev grouped together elements having similar property.

3.Mendeleev took formulae of hydrides and oxides formed by different element as the basic property of element for its classification.

4. Mendeleev P.T consist of horizontal rows of periods and vertical rows of groups.

5. Mendeleev classified undiscovered elements as eka-aluminium, eka-boron and eka-silicon.

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