Tag Archives | periodic

What is Mendeleef’s periodic law and mention its essential features ?

When Mendeleef arranged the elements in order of increasing atomic masses, he observed that the elements with similar properties appeared at regular intervals. This led him to state his famous periodic law in 1869. The Mendeleef’s Periodic Law states that:

By |2010-12-30T17:23:19+00:00December 30, 2010|Chemistry|Comments Off on What is Mendeleef’s periodic law and mention its essential features ?

What is the modern periodic law ?

In 1913, H.G.J Moseley in England proved that the more fundamental properties of an element are its atomic number. Therefore he suggested that the basis of classification of elements should be atomic number. This led to the modern periodic law, which states that..

By |2010-12-30T17:20:12+00:00December 30, 2010|Chemistry|Comments Off on What is the modern periodic law ?
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