Question

Answer the following for the Chemical Formula:

C0₂

_Electrons:

Electonegativity:

Bond Polarity:

Dipole Moment:

Polarity:

IF₅

_Electrons:

Electonegativity:

Bond Polarity:

Dipole Moment:

Polarity:

H₂O

_Electrons:

Electonegativity:

Bond Polarity:

Dipole Moment:

Polarity:

Answer 1

(1)

CO2 (carbon dioxide) molecule

Electrons: C has 6 electrons out of which 4 are valence electrons. O has 8 electrons out of which 6 are valence electrons. Total number of electrons in CO2 molecule . Total number of valence electrons in CO2 molecule

Electonegativity: O is more electronegative than C. The electronegativities of C and O are 2.5 and 3.5 respectively.

Bond Polarity: C has partial positive charge and O has partial negative charge. Thus, C=O bond is polar.

Dipole Moment: The CO2 molecule has zero dipole moment as individual bond dipoles cancel each other. It is a linear molecule with bond angle of 180 degrees.

Polarity: Since it has zero dipole moment, the molecule is non polar.

(2)

IF5

Electrons: I has 53 electrons out of which 7 are valence electrons. F has 9 electrons out of which 7 are valence electrons. Total number of electrons in IF5 molecule . Total number of valence electrons in IF5 molecule

Electonegativity: F is more electronegative than I. The electronegativities of F and I are 4.0 and 2.5 respectively.

Bond Polarity: I has partial positive charge and F has partial negative charge. Thus, I-F bond is polar.

Dipole Moment: The IF5 molecule has non zero dipole moment as individual bond dipoles do not cancel each other. The molecular geometry is square pyramidal.

Polarity: Since it has non zero dipole moment, the molecule is polar.

(3)

H2O (water) molecule

Electrons: H has 1 electron out of which 1 is valence electron. O has 8 electrons out of which 6 are valence electrons. Total number of electrons in H2O molecule . Total number of valence electrons in H2O molecule

Electonegativity: O is more electronegative than H. The electronegativities of H and O are 2.1 and 3.5 respectively.

Bond Polarity: H has partial positive charge and O has partial negative charge. Thus, O-H bond is polar.

Dipole Moment: The H2O molecule has non zero dipole moment as individual bond dipoles do not cancel each other. It is a bent or V shaped or angular molecule with bond angle of 104.5 degrees.

Polarity: Since it has non zero dipole moment, the molecule is polar.