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When two or more isotopic atoms are conn...

When two or more isotopic atoms are connected to the asymmetric chiral carbon atom of the same element, the priority sequence is :

A

Isotope of higher mass preceeds over the lower

B

Isotope of lower mass preceeds over the higher

C

All the isotopes are equivalent

D

Most stable isotope preceeds over the unstable

Text Solution

Verified by Experts

The correct Answer is:
A
Isotope of higher mass preceeds over the lower
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Oxidation number is the charge which an atom of an element has in its ion or appears to have when present in the combined state. It is also called oxidation state. Oxidation number of any atom in the elementary state is zero. Oxidation number of a monoatomic ion is equal to the charge on it. In compounds of metals with non metals, metals have positive oxidation number while non metals have negative oxidation numbers. In compounds of two difference elements, the more electronegative element has negative oxidation number whereas the other has positive oxidation number. In complex ions, the sum of the oxidation number of all the atoms is equal to the charge on the ion. If a compound contains two or more atoms of the same element, they may have same or different oxidation states according as their chemical bonding is same or different. The oxidation state of the most electronegative element in the products of the reaction between BaO_(2) and H_(2)SO_(4) are

AAKASH SERIES-ISOMERISM -PRACTICE SHEET (EXERCISE-III) STRAIGHT OBJECTIVE TYPE QUESTIONS)
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  2. A molecule as a whole is asymmetric if it does not possess

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  3. For an optically active compound specific rotation ([alpha](D)^(25)) d...

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  4. Which of the following exists in enantiomeric pair

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  5. When two or more isotopic atoms are connected to the asymmetric chiral...

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  6. (A): Meso tartaric acid is optically inactive (R): Meso tartaric aci...

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  7. (+-) Lactic acid is optically inactive due to

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  8. If the specific rotation produced by the compound ‘A’is +52^(@), the...

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  9. The incorrect statement about

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  10. The pair of structures given below represent

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  11. Which of the following statements is not correct regarding enantiomers...

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  12. Which of the following can show optical isomerism

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  13. 2, 3-pentadiene is optically active since it

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  14. How many chiral carbon atoms are present in 2, 3, 4 -trichoropentane?

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  15. How many isomers could be obtained by replacing one hydrogen of propen...

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  16. For an optically active compound alpha(obs) depends on

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  17. Which statement is incorrect about diastereomers

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  18. If a compound has ‘n’ different types of asymmetric carbon atoms then ...

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  19. For tartaric acid total number of possible stereo isomers (configurati...

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  20. Total number of possible isomers (configuartional only ) for 2,3,4- tr...

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