How do I determine which molecules are polar?
I am given CCl4, CH4, H3C-CH2-CH2-CH2-CH2- CH3, H2O, CO2, and O2
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To determine the polarity of a molecule, you need to know two things.
a) Determine whether the bonds are polar?
b) Determine whether the molecule is symmetrical.(shapes)
A polar molecule must have polar bond and the molecule must be assymmetrical (not symmetrical).
A polar bond is formed if the atoms are of different electronegativities.
a) CCl4 -----> polar bond but symmetrical---> non polar
b) CH4 -----> polar bond but symmetrical---> non polar
c) same as above
d) H2O -----> polar bond and assymmetrical (V-shaped)--> polar molecule
e) CO2 -----> polar bond but linear in shape ----> non polar
f) O2 --------> non polar bond-----------------------> non polar
a) Determine whether the bonds are polar?
b) Determine whether the molecule is symmetrical.(shapes)
A polar molecule must have polar bond and the molecule must be assymmetrical (not symmetrical).
A polar bond is formed if the atoms are of different electronegativities.
a) CCl4 -----> polar bond but symmetrical---> non polar
b) CH4 -----> polar bond but symmetrical---> non polar
c) same as above
d) H2O -----> polar bond and assymmetrical (V-shaped)--> polar molecule
e) CO2 -----> polar bond but linear in shape ----> non polar
f) O2 --------> non polar bond-----------------------> non polar
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