Which of the following best represents the number of particles (atoms, molecules, or ions) present in one mole of a substance?

• A. 1.00 × 10^{6}
• B. 3.01 × 10^{23}
• C. 6.022 × 10^{23}
• D. 6.022 × 10^{20}

Answer: (C)

Verified step by step guidance

1. Understand that one mole of any substance contains a specific number of particles (atoms, molecules, or ions), which is a fundamental constant in chemistry known as Avogadro's number.
2. Recall that Avogadro's number is defined as \$6.022 \times 10^{23}$ particles per mole, representing the number of entities in exactly one mole of a substance.
3. Compare the given options to Avogadro's number to identify which value correctly represents the number of particles in one mole.
4. Recognize that values like \$1.00 \times 10^{6}\( or \)6.022 \times 10^{20}$ are significantly smaller than Avogadro's number and thus do not represent the number of particles in one mole.
5. Conclude that the correct representation of the number of particles in one mole is \$6.022 \times 10^{23}$, which is the accepted value of Avogadro's number.