Please answer A D and E and explain Name: 2. (25 points) Circle the number that

Question

Please answer A D and E and explain Name: 2. (25 points) Circle the number that corresponds to the correct answer for each of the following five (5) questions. A. Which of the following reactions is the most regioselective? I. photochemical fluorination of n-butane with molecular fluorine 2. photochemical chlorination of n-butane with molecular chlorine 3. photochemical bromination of n-butane with molecular bromine B. The highlighted atom of H,CCH,CHCHCO,CH, has 1. sp hybridization 2. sp hybridization 3. sp' hybridization C. What is the maximum number of electrons that can reside in a 2p, orbital? 1. one electron 2. six electrons 3. two electrons D. Which of the following has the most torsional strain? I., the eclipsed conformation of propane 2. the eclipsed conformation of ethane 3. the gauche conformation of n-butane E. Which of the following compounds has the largest molecular dipole moment? Br Br 2.

Explanation / Answer

A.

more regioselective means reactivity should be less

less the reactivity more the selectivity

bromine free radical is less reactive than Cl and F

so bromination will be more regio selective than than fluorination and chlorination

so option 3 is correct answer

D.

torsional strain means strain due to bond pair electrons

which will be more in eclipsed conformer

there are only two options with eclipsing

first option is correct

E.

option 3 is having least dipole moment because both the poles are equal and opposite so they will get cancil out

correct anser is option B

because C-F bond is more polar than C-Br bond

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