EVERYDAY SCIENCE

Detailed explanation-1: -As a result, the electrons are not shared equally. The atom around which the electrons spend the most time will have a slightly negative charge, and the atom around which the electrons spend the least time will have a slightly positive charge.

Detailed explanation-2: -The shared electrons spend more time near the oxygen nucleus, giving it a small negative charge, than they spend near the hydrogen nuclei, giving these molecules a small positive charge. Polar covalent bonds form more often when atoms that differ greatly in size share electrons.

Detailed explanation-3: -The oxygen and hydrogen atoms share electrons, but since oxygen atom is more electronegative, which means it has a stronger pull on the electrons than hydrogen atoms, the electrons spend more time near the oxygen atom.

Detailed explanation-4: -The bonding pair of electrons spends most of its time between the two atomic nuclei, thereby screening the positive charges from one another and enabling the nuclei to come closer together than if the bonding electrons were absent.