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

💡 Solution & Explanation

I don't see the answer options in your question. To provide a complete step-by-step solution explaining why option A is correct, I need you to share: 1. **What option A states** (the pair of elements mentioned) 2. **What options B, C, and D are** (for comparison) **General approach to solve this type of question:** Elements belong to the **same group** if they have: - The same number of valence electrons - Similar chemical properties - The same outermost shell electron configuration pattern **Common same-group pairs to remember:** - Group 1: Li, Na, K, Rb, Cs (alkali metals) - Group 17: F, Cl, Br, I (halogens) - Group 18: He, Ne, Ar, Kr, Xe (noble gases) - Group 2: Be, Mg, Ca, Sr, Ba (alkaline earth metals) Please provide the options so I can explain why A is the correct pair and why the others are not from the same group.