How many atoms are present in 1 mole of copper (Cu)?

• A. 6.022 × 10^{23} atoms
• B. 1.008 × 10^{24} atoms
• C. 63.55 atoms
• D. 3.01 × 10^{23} atoms

Answer: (A)

Verified step by step guidance

1. Understand that 1 mole of any substance contains Avogadro's number of particles (atoms, molecules, etc.).
2. Recall Avogadro's number, which is \$6.022 \times 10^{23}$ particles per mole.
3. Since copper (Cu) is an element, 1 mole of copper contains \$6.022 \times 10^{23}$ atoms of copper.
4. Note that the atomic mass of copper (63.55) is not the number of atoms but the mass in grams of 1 mole of copper.
5. Therefore, the number of atoms in 1 mole of copper is directly given by Avogadro's number, \$6.022 \times 10^{23}$ atoms.