Electronegativity values vary depending on the chemical environment. Which of the following specific — Periodic Table and Periodicity Chemistry Question

💡 Solution & Explanation

Electronegativity increases with increasing s-character because s-orbitals are closer to the nucleus. Thus, $sp (50\% s) > sp^2 (33.3\% s) > sp^3 (25\% s)$. It also increases with a positive oxidation state (pulls electrons stronger). Silicon is directly below Carbon in Group 14, so it has a lower electronegativity than Carbon.