#### Question

Write the significance of a plus and a minus sign shown in representing the orbitals.

#### Solution 1

Molecular orbitals are represented by wave functions. A plus sign in an orbital indicates a positive wave function while a minus sign in an orbital represents a negative wave function.

#### Solution 2

Plus and minus sign is used to indentify the nature of electrons wave. Plus (+ve) sign denotes crest, while (-ve) sign denotes trough.

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Solution Write the Significance of a Plus and a Minus Sign Shown in Representing the Orbitals. Concept: Molecular Orbital Theory - Introduction.