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Deuterium is an isotope of hydrogen....

Deuterium is an isotope of hydrogen.

A

Statement-I is True, Statement-II is True : Statement-II is a correct explanation for Statement-I

B

Statement-I is True, Statement-II is True : Statement-II is `NOT` a correct explanation for Statement-I

C

Statement-I is True, Statement-II is False.

D

Statement-I is False, Statement-II is True.

Text Solution

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The correct Answer is:
D
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Deuterium is the isotope of hydrogen of mass number 2 , with a proton and a neutron in its nucleus. The chemistry of deuterium is nearly identical to the chemistry of hydrogen, except that C-D bond is slightly (5.0 "KJ" //"mole") stonger than the C-H bond. Reaction rates tend to be slower if a C-D bond as opposed to a C-H bond is broken in a rate limiting step. This effect on the rate is called a kinetic isotope effect. CH_(3)-overset(O) overset(||)(C)-CH_(3)overset(D_(2)O,D^(+))toX

At a temperature of 0 K , the total energy of a gaseous diatomic molecule AB is approximately given by: E=E_(o)+E_(vib) where E_(o) is the electronic energy of the ground state, and E_(vib) is the vibrational energy. Allowed values of the vibrational energies are given by the expression: E_(vid)=(v-1/2)epsilon " " v=0, 1, 2, ....... " " epsilon=h/(2pi)sqrt(k/mu) " " mu(AB)=(m_(A)m_(B))/(m_(A)+m_(B)) where h is the planck's constant, is the vibration quantum number, k is the force constant, and is the reduced mass of the molecule. At 0K , it may be safely assumed that is zero, and E_(o) and k are independent of isotopic substitution in the molecule. Deuterium, D, is an isotope of hydrogen atom with mass number 2 . For the H_(2) molecule, k is 575.11 N m^(-1) , and the isotopic molar masses of H and D are 1.0078 and 2.0141 g mol^(-1) , respectively. At a temperature of 0K : epsilon_(H_(2))=1.1546 epsilon_(HD) and epsilon_(D_(2))=0.8167 epsilon_(HD) ul("Calculate") the dissociation energy, DeltaE , in eV of a hydrogen molecule in its ground state such that both H atoms are produced in their ground states.

A deuterium is

Name the isotopes of hydrogen.

The isotopes of hydrogen are:

Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes?

Write the names of isotopes of hydrogen. What is the mass ratio of these isotopes?

Which one of the following is not an isotope of hydrogen ?

Select the correct statement regarding isotopes of hydrogen.

ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-3
  1. Statement-II : Most o-,P-directing substitution are deactivating. Be...

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  2. Statement-I : Nitrobenzene does not undergo Friedel-Craft's reaction. ...

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  3. Deuterium is an isotope of hydrogen.

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  4. The typical reaction of benzene and other aromatic compounds are elect...

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  5. The typical reaction of benzene and other aromatic compounds are elect...

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  6. The typical reaction of benzene and other aromatic compounds are elect...

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  7. It is not always easy to predict the position of attack on multiply su...

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  8. It is not always easy to predict the position of attack on multiply su...

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  9. It is not always easy to predict the position of attack on multiply su...

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  10. A third group is least likely to enter between two groups in the meta ...

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  11. A third group is least likely to enter between two groups in the meta ...

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  12. A third group is least likely to enter between two groups in the meta ...

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  13. A third group is least likely to enter between two groups in the meta ...

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  14. Assertion : The solubility of n alcohol in water decreases with incre...

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  15. Statement I: p-Nitrophenol is a stronger acid than o-nitrophenol. St...

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  16. Assertion : Phenol is more reactive than benzene towards electrophilic...

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  17. Statement-I: Tert-Butoxide is a stronger base than OH^(-) or C(2)H(5)O...

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  18. Assertion : Phenol forms 2, 4, 6-tribromophenol on treatment with Br2 ...

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  19. Phenols are converted into their salts by aqueous NaOH but not by aque...

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  20. Phenols are converted into their salts by aqueous NaOH but not by aque...

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