Asked by Arron
Select all cases where the substance shown has a molecular dipole.
CH4 methane
CH3CH2CH2CH3 butane
ICl iodine chloride
H2Se hydrogen selenide
CH3CHO acetaldehyde
CH3OCH2CH3 methylethylether
None
CH4 methane
CH3CH2CH2CH3 butane
ICl iodine chloride
H2Se hydrogen selenide
CH3CHO acetaldehyde
CH3OCH2CH3 methylethylether
None
Answers
Answered by
DrBob222
To determine if/not dipole, you need two pieces of information.
1. Does the central atom and the atoms attached have a difference in electronegativity? If no, definitely not. If yes, it MAY (or may not) have a dipole moment for the molecule.
2. Is the molecule symmetrical in three dimensions. If symmetrical, no dipole; if unsymmetrical, yes a dipole moment for the molecule.
CH4. Is symmetrical. No dipole moment.
Butane. symmetrical. no dipole moment for the molecule.
ICl. Difference in EN. Must be polar. Must have be a dipole.
H2Se. Difference in EN. Molecule in not symmetrical. Has a dipole moment.
I'll leave the other for you.
1. Does the central atom and the atoms attached have a difference in electronegativity? If no, definitely not. If yes, it MAY (or may not) have a dipole moment for the molecule.
2. Is the molecule symmetrical in three dimensions. If symmetrical, no dipole; if unsymmetrical, yes a dipole moment for the molecule.
CH4. Is symmetrical. No dipole moment.
Butane. symmetrical. no dipole moment for the molecule.
ICl. Difference in EN. Must be polar. Must have be a dipole.
H2Se. Difference in EN. Molecule in not symmetrical. Has a dipole moment.
I'll leave the other for you.