R and S Configuration

Q. What is the difference between erythro Vs meso ?Is erythro a type of meso compound?

Q. Jahn-Teller effect is observed in Options: d8 (High spin complex) d8 (Low spin complex) d9 (High spin complex) d6 (Low spin complex)

Q. What is general electronic configuration of S .P.D.F blocks element?

Q. Which one of the following compounds show geometrical isomerism?

1. 1, 1-dibromoprop-1-ene
2. propene
3. 2-methylprop-1-ene
4. 1, 2-dibromobut-2-ene

Q.

Find the R/S configuration of the following compound.

1. R
2. S
3. D
4. L

Q. The number of close neighbour in a face centred cubic lattice of identical sphere is

Q.

Step wise rules for naming ring compounds

Q. Number of radial nodes and angular nodes in 4d orbital

Q. In terms of R/S or CIP rules, what is the configuration of the chiral center?

1. S
2. R
3. D
4. L

Q. Give the R/S configuration of this alanine.

1. R
2. S
3. D
4. L

Q. What is the percentage of enantiomeric excess of a mixture containing 12.8 mol (R)-2-bromobutane and 3.2 mol (S)-2-bromobutane?

Q. Given are 2 compounds.



What is the relationship between the two?

1. Enantiomers
2. Diastereomers
3. Mesomers
4. Same compound

Q. coordination no of simple cubic is 6. Explain??

Q. what is anomeric carbon?

Q. All chiral centres with R configuration are dextrorotatory.

1. True
2. False

Q.

why ayl group shows - inductive effect?

Q. The no. Of tetrahedral and octahedral voids formed with a 1 half of sphere with adjacent layers of close packing are respectively

Q. The R/S configuration of the following compound is

1. R
2. S
3. No chiral centre

Q. explain dextro and levo rotatory isomers

Q. In terms of R/S or CIP rules, what is the configuration of the chiral center?

1. R
2. S
3. D
4. L

Q. What is the percentage of enantiomeric excess of a mixture containing 12.8 mol (R)-2-bromobutane and 3.2 mol (S)-2-bromobutane?

Q. Sterioisomers differ in

1. Configuration
2. Conformation
3. They do not differ
4. None of these

Q. Explain absolute configuration (R and S nomenclature)

Q. Given are 2 compounds.


What is the relationship between the two?

1. Enantiomers
2. Diastereomers
3. Mesomers
4. Same compound

Q. Why is a planar node called as angular node? Does it have any relationship with any angle?

Q.

STATEMENT-1 : Racemic mixture has a net rotation of zero.

STATEMENT-2 : Racemic mixture contains optically inactive isomers.

1. STATEMENT-1 is True, STATEMENT-2 is False
2. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is NOT a correct explanation for STATEMENT-1
3. STATEMENT-1 is False, STATEMENT-2 is True
4. STATEMENT-1 is True, STATEMENT-2 is True; STATEMENT-2 is a correct explanation for STATEMENT-1

Q.


Find the R/S configuration of the following compound.

1. R
2. S
3. D
4. L

Q. Give the R/S configuration of this alanine.

1. R
2. S
3. D
4. L

Q. Assertion :Diastereomers are not mirror image of each other. Reason: Diastereomers may be optically active.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. is the term used to describe a compound which rotates light in the clockwise direction.

1. Dextrorotatory
2. Laevorotatory
3. R
4. S