Question

What is the bond polarity of $ C{H_4} $ $ ? $

Answer 1

Hint :To determine the band polarity of $ C{H_4} $ we use the numerical method means, find the difference between the electronegativity of the carbon and hydrogen atoms. If the result is between $ 0.4 $ and $ 1.7 $ , then the bond is polar covalent, otherwise the bond is nonpolar covalent.

Complete Step By Step Answer:
The polarity of bonds is obtained due to the iteration of the bonds between molecules and atoms with different electronegativities. They are two types of bond polarities: Polar and nonpolar.
The molecules that have atoms with equal electronegativity are nonpolar in nature. Because the equal charge distribution exists across the molecule.
The molecules that have atoms with unequal electronegativity and the difference between the electronegativity of the atoms lying between $ 0.4 $ and $ 1.7 $ , are polar in nature. Because of the unequal electronegativity, a more electronegative atom pulls the large proportions of shared bonded electrons and becomes a negative pole and another atom as a positive pole.
 $ C{H_4} $ has a symmetric tetrahedral geometric shape with four identical $ C - H $ bonds. The electronegativity of carbon and hydrogen atoms is $ 2.55 $ and $ 2.2 $ respectively. Whose electronegativity difference is $ 0.35 $ . The difference in electrostatic potential is also minimal giving an overall nonpolar molecule. Hence $ C{H_4} $ molecule is nonpolar.

Note :
Note that the nonpolar molecules are symmetric in shape whereas the polar molecules are asymmetric in shape. The ability of an atom to attract electrons in a covalent bond known as Electronegativity of an atom.