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- What is hydrophobic effect? What is its significance in biomolecular structure?Identify These are very weak interactions caused by the momentary changes in electron density in a moleculeIf we replace the hydrogen atoms in ammonia with the ethyl moieties (C2H5)3— N),there is no change in the hybridization of central oxygen atom, yet they have differentbond angles, Why? Which molecule has lower bond angle? Give reasons to supportyour answer.(d) What is the simplest justifications for believing that molecular structure is more oftengoverned by BP-BP/BP-LP/LP-LP repulsions than by the van der Walls repulsions ofthe nonbonding electrons on the substituent atoms? (e)Explain the influence of physical state and designing of metal on metallic corrosion.
- What is the hybridisation of S in SF6 ?Chloral, Cl₃C-CH=O, reacts with water to form the seda-tive and hypnotic agent chloral hydrate, Cl₃C-CH(OH)₂. DrawLewis structures for these substances, and describe the change inmolecular shape, if any, that occurs around each of the carbonatoms during the reactionA benzene molecule can be modeled as six carbon atoms arrangedin a regular hexagon in a plane. At each carbon atom, one of threeradicals NH2, COOH, or OH can be attached. How many suchcompoundsare possible?
- Demonstrate the hybridization types of carbon, oxygen and nitrogen atoms in the following molecules and show their three-dimensional states by considering their bond angles.Arrange the following: H₂, I₂, O₂, Ar[1] from the lowest to the highest boiling point;[2] from the least to the most polarizable.Explain why.Describe the bonding in the hydrogen cyanide molecule, HCN. Assume that N is sp-hybridized.
