How many protons are present in 20.02 mol of neon (Ne)?

• A. 6.02 × 10^{23}
• B. 1.21 × 10^{25}
• C. 2.41 × 10^{25}
• D. 1.20 × 10^{24}

Answer: (B)

Verified step by step guidance

1. Identify the number of protons in one atom of neon (Ne). Neon has an atomic number of 10, which means each neon atom contains 10 protons.
2. Recall that 1 mole of any substance contains Avogadro's number of particles, which is \$6.02 \times 10^{23}$ particles per mole.
3. Calculate the total number of neon atoms in 20.02 moles by multiplying the number of moles by Avogadro's number: \$20.02 \times 6.02 \times 10^{23}$ atoms.
4. Since each neon atom has 10 protons, multiply the total number of atoms by 10 to find the total number of protons: \$10 \times (20.02 \times 6.02 \times 10^{23})$.
5. Express the final answer in scientific notation to match the format of the given options.