How is nitrogen prepared in the laboratory? Write the chemical equations of the reactions involved.
Explanation For the formation of hydrogen bonding, there are some essential conditions which need to be fulfilled. These conditions are as follows: The hydrogen atom should be bonded to a highly electronegative atom such as fluorine, nitrogen or oxygen through a covalent bond. This electronegative element makes the hydrogen highly electropositive. This electropositive hydrogen forms hydrogen bond with another highly electronegative element such as fluorine, nitrogen or oxygen. Since in PH3 , the hydrogen atoms are bonded covalently to phosphorous which is not an electronegative element, PH3 does not form hydrogen bonds.