AP BIOLOGY

BIOCHEMISTRY

POLAR AND NONPOLAR MOLECULES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following molecular geometry best describe the shape and polarity of CH₄?
A
tetrahedral polar
B
tetrahedral nonpolar
C
trigonal pyramidal non polar
D
trigonal pyramidal polar
Explanation: 

Detailed explanation-1: -This is tetrahedral, and this angle is equal to 109.5 degrees and it is non polar. Did you know?

Detailed explanation-2: -Explanation: We often say that a C-H bond is nonpolar because the electronegativities of C and H are so close to each other.

Detailed explanation-3: -The molecular geometry of methane-CH4-is tetrahedral with symmetric charge distribution on the central atom. Therefore this molecule is non-polar.

Detailed explanation-4: -Methane $$( has symmetrical tetrahedral structure hence dipole moment is zero. Therefore it is non-polar.

There is 1 question to complete.