In general boiling point of covalent compounds is affected due to increasing molecular weight and hy — Chemical Bonding Chemistry Question
Question
In general boiling point of covalent compounds is affected due to increasing molecular weight and hydrogen bonding. Thus it is observed that the boiling point of octanol is greater that water while that of methanol is lesser than water. The other properties which are considerably affected due to hydrogen bond formation are acidic nature, melting point, anamalous behaviour of water below 4°C., It is therefore concluded that hydrogen bonding plays a vital role in explaning many observable facts.
💡 Solution & Explanation
Step 1: Determine the geometry of ethyne (C2H2): each carbon is sp hybridized, yielding a symmetric linear structure (H-C≡C-H). Step 2: Analyze the structures of the options: H2O2 is open-book (non-planar), NO2 is bent (sp2 with an odd electron), SnCl2 is bent (sp2 with one lone pair). Step 3: Carbon dioxide (CO2) is sp hybridized and linear (O=C=O). Therefore, C2H2 is isostructural with CO2, matching option (d).