GENERAL KNOWLEDGE

GK

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following type of intermolecular forces is the result of temporary uneven distribution of electrons around molecules that result in monetary dipoles?
A
Dipole-dipole forces
B
Hydrogen bonding
C
Hydrogen bonding
D
London dispersion forces
Explanation: 

Detailed explanation-1: -London’s dispersion forces can be defined as a temporary attractive force due to the formation of temporary dipoles in a nonpolar molecule.

Detailed explanation-2: -The London dispersion force is the weakest intermolecular force. The London dispersion force is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.

Detailed explanation-3: -London dispersion forces are caused by an uneven distribution of electrons within an atom. This results in a slightly negative ( ) and slightly positive charge on either side of the atom. A temporary dipole has been established. This temporary dipole can induce a temporary dipole on a neighbouring atom/molecule.

Detailed explanation-4: -Polar covalent bonds are between two atoms that have a difference in electronegativity. This difference in electronegativity causes unequal sharing of electrons, resulting in the more electronegative atom to have a partial negative charge, and the other atom to have a partial positive charge.

Detailed explanation-5: -London dispersion forces result from the coulombic interactions between instantaneous dipoles. Dispersion forces are present between all molecules (and atoms) and are typically greater for heavier, more polarizable molecules and molecules with larger surface areas.

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