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Introduction : The element in the periodic table with atomic number 68 is Erbium.  Erbium is a element which belongs to lanthanide serie...

Introduction : Beryllium is the compound which as atomic number 4 and mass number 9.01218.  Beryllium has electronic configuration 1s 2 , ...

Introduction : In the periodic table the elements are arranged in the order of the atomic number.  Atomic number is nothing but it is th...

Introduction : The vapour pressure of solution decrease when a non volatile solution is added to a volation solvent. There are many prop...

Introduction: All substance is made up of smallest particle, called atom. In chemistry, the smallest particle, used for calculation, is sa...

Two very important entities of elements that recognise its characteristics are its atomic number and atomic mass. Similarly, mol mass of a ...

Periodic table consists of an array of elements, with different metallic properties. Some are completely metallic, making them soft or hard...