Class 11 Chemistry Hydrogen Introduction

Introduction

On the earth Hydrogen exists as H2 molecule (dihydrogen). It constitutes to 10 % mass of universe. Hydrogen exit in many substances like carbohydrates, hydrocarbons etc. It is actually 3rd most abundant element

    Class_11_Hydrogen_Hydrogen_Symbol_&_Isotopes                           

As you know, isotopes differ in number of neutrons .So, accordingly Protium has no neutron, Deuterium has 1 and Tritium has 2 neutrons. It is 1st element in Periodic table. Its position is anomalous as it resembles alkali metal and halogen.

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