According to the position of the elements in the periodic table, the nitrogen bond contains the greatest difference in the electronegativity.
Electronegativity is defined as the tendency of an atom, which participates in a bond formation to attract the electrons. The nitrogen when bonded with hydrogen, shows a greatest difference in the electronegativity. The electronegativity value of N and H is 3.04 and 2.20 respectively. Hence, their difference is
ΔE=(3.04-2.20)=0.84
For boron and hydrogen, it is
ΔE=(2.20-1.57)=0.63
For phosphorus and hydrogen
ΔE=(2.20-2.19)=0.01
Therefore, according to the position of the elements in the periodic table, the nitrogen bond with hydrogen contains the greatest difference in the electronegativity.
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