How many atoms are present in one mole of a substance?

• A. 1.00 × 10^{6}
• B. 3.01 × 10^{22}
• C. 9.11 × 10^{-31}
• D. 6.022 × 10^{23}

Answer: (D)

Verified step by step guidance

1. Understand that one mole of any substance contains Avogadro's number of particles (atoms, molecules, or ions).
2. Recall that Avogadro's number is a constant defined as \$6.022 \times 10^{23}$ particles per mole.
3. Recognize that this number represents the number of atoms in one mole of a pure element.
4. Compare the given options to Avogadro's number to identify the correct value representing the number of atoms in one mole.
5. Conclude that the correct answer is the option closest to \$6.022 \times 10^{23}$ atoms, which is the standard value for one mole.