Chemical Bonding and Molecular Structure Quiz

The concept of chemical bonding is the attractive force that binds atoms together in a molecule. It is formed either by the transfer of electrons or by the sharing of electrons. The text also discusses Lewis symbols, which represent the valence electrons in an atom, and how they are used to indicate the valency of an atom.

Valence electrons are the outermost electrons that participate in the formation of a chemical bond. They are responsible for the bonding of atoms either by transfer or sharing of electrons. The inner electrons, called core electrons, are well protected and do not participate in bonding.

Chemical bonds in a molecule are formed either by the transfer of electrons or by the sharing of electrons. For example, in the case of sodium [11Na -2,8,1], the chemical bond is formed by the transfer of one electron, while in the case of chlorine [17Cl -2,8,7], the bond is formed by the sharing of electrons.

Lewis symbols are considered informative because they give the valency of an atom, which is either equal to the number of dots or crosses or equal to 8. For example, the Lewis symbol for sodium [11Na -2,8,1] indicates that its valency is 1, and for chlorine [17Cl -2,8,7], the valency is 1 as well.

Lewis symbols are simple notations introduced by G.N Lewis to represent valence electrons in an atom. They are used to represent the nucleus and the inner electrons by the symbol of the element and the valence electrons by dots or crosses. They provide information about the valency of an atom, which is either equal to the number of dots or crosses or equal to 8.