Which of the following pairs has both members from the same group of periodic table — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

I'd be happy to help, but the question appears incomplete—the answer options (A, B, C, D) are not provided in your message. To solve this problem, I need to see the pairs being compared. **General approach for such questions:** 1. Identify the group number of each element in a pair 2. Elements in the same group have the same number of valence electrons 3. Check if both members of a pair belong to the same group (vertical column in the periodic table) **Example:** If the options were: - (A) Na and K → Both Group 1 ✓ (same group) - (B) O and S → Both Group 16 ✓ (same group) - (C) Cl and Br → Both Group 17 ✓ (same group) Please provide the complete options, and I'll identify which pair belongs to the same group and explain why A is the correct answer.