Answer:
C
Explanation:
The pair with the greatest polarity is the one with the greatest net difference in electronegativity. We do this by taking the absolute value of the electronegativity of the first atom minus the electronegativity of the second atom.
Al-Si= abs(1.61-1.9)= abs(-0.29)= 0.29
S-Cl= abs(2.58-3.16)= abs(-0.58)= 0.58
N-H= abs(3.04-2.2)= abs(0.84)=0.84
C-N= abs(2.55-3.04)= abs(-0.49)=0.49
The pair with the greatest difference in electronegativity is N-H
The pair that atoms have the high polarity should be option C i.e. N-H
The pair that have high polarity should be the high net difference in terms of electronegativity.
So, based on this, the calculation is as follows:
Al-Si= abs(1.61-1.9)= abs(-0.29)= 0.29
S-Cl= abs(2.58-3.16)= abs(-0.58)= 0.58
N-H= abs(3.04-2.2)= abs(0.84)=0.84
C-N= abs(2.55-3.04)= abs(-0.49)=0.49
The pair with the greatest difference in electronegativity should be N-H
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