Chemistry: The Central Science (13th Edition)

Published by Prentice Hall

Chapter 6 - Electronic Structure of Atoms - Exercises: 6.73d

Answer

The half arrows in an orbital diagram represent the electrons in a single orbital. Each half arrow represents one electron, with the direction of the half arrow standing for electron spin.

Work Step by Step

The half arrows in an orbital diagram represent the electrons in a single orbital. Each half arrow represents one electron, with the direction of the half arrow standing for electron spin. It is agreed that the half arrow heading up represents an electron with $m_s=+\frac{1}{2}$ (positive spin quantum number), while the half arrow heading down represents an electron $m_s=-\frac{1}{2}$ (negative spin quantum number).

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