Question

which of the following is not a correct statement from the lewis theory of bonding?
a full valence shell of electrons may be achieved by the sharing of electrons between non - metal atoms.
electrons are most stable when they are unpaired.
atoms and ions are stable if they have a full valence shell of electrons.
the sharing of electrons results in a covalent bond.

Explanation:

Lewis Theory focuses on valence electrons and stability via full valence shells. Non-metals share electrons (covalent bonds) to achieve full shells; full valence shells mean stability. Unpaired electrons are less stable than paired ones in a full shell.

Answer:

B. Electrons are most stable when they are unpaired.