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dipole moment would be calculated by the electronegativity difference between the atoms then you use that to figure out the intermolecular force. The dipole moment cancels in CO2 due to the shape. N2 has no dipole moment because there is no electronegativity difference. So the only forces would London dispersion.
Last edited by Brian Kwak 1D on Wed Jul 17, 2019 10:46 am, edited 3 times in total.
Both CO2 and N2 are nonpolar molecules. The molecular shape of CO2 and N2 is linear. There is no dipole moment for N2 since there is no difference in electronegativity between the two Ns. There is a difference in electronegativity between C and O but those dipole moments cancel each other out since the molecular shape is linear. Therefore, there are weak intermolecular forces for CO2 and N2 called London dispersion forces or induced dipole-induced dipole forces.
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