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Molecular and Ionic equa..



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Q1. Choose the incorrect statement from the following options.

(a) In bonding molecular orbital, electron density is low in the region between the nuclei of bonded atoms
(b) The energy of antibonding molecular orbital is higher than that of atomic orbitals from which it is formed
(c) Every electron in bonding molecular orbital contributes toward stability of the molecule
(d) Antibonding takes place when lobes of atomic orbitals have different signs

Q2. According to Molecular Orbital Theory, the shape and size of a molecular orbital depends upon _________

(a) Shape and size of the combining atomic orbitals
(b) Numbers of the combining atomic orbitals
(c) Orientation of the combining atomic orbitals
(d) All of the mentioned

Q3. The relative energies of molecular orbitals in increasing order have been found to be as follows.

(a) For O2 to Ne2
(b) For H2 to N2
(c) For H2 to Ne2
(d) For N2 to Ne2

Q4. Which of the following molecule does not exist due to its zero bond order?

(a) H2+
(b) He2+
(c) He2
(d) H2?

Q5. On the basis of molecular orbital theory, select the most appropriate option.

(a) The bond order of O2 is 2.5 and it is paramagnetic
(b) The bond order of O2 is 1.5 and it is paramagnetic
(c) The bond order of O2 is 2 and it is diamagnetic
(d) The bond order of O2 is 2 and it is paramagnetic

Q6. Arrange the following molecules in the order of increasing stability.

(a) N2+ < N2 < N2? < N22-
(b) N22- < N2? < N2 < N2+
(c) N22- < N2? = N2+ < N2
(d) N2 < N2+ = N2? < N22-

Q7. Arrange the following molecules in decreasing bond length.

(a) O2 > O2? > O2+ > O22-
(b) O22- > O2? > O2 > O2+
(c) O22- > O2? > O2+ > O2
(d) O2? > O2+ > O22- > O2

Q8. Bond Order of O2, F2, N2 respectively are __________

(a) +1, +2, +3
(b) +2, +3, +1
(c) +2, +1, +3
(d) +3, +2, +1

Q9. The filling of molecular orbital takes place according to __________

(a) The Aufbau Principle
(b) Pauli Exclusion Principle
(c) Hund?s rule of maximum multiplicity
(d) All of the mentioned

Q10. If the sign of the wave function is unchanged when the orbital is reflected about its centre, the orbital is ______________

(a) Gerade
(b) Ungerade
(c) Gerade as well as Ungerade
(d) None of the mentioned


0 votes
0 Answer
800 views

Assertion : Gases Combine In Simple Ratio Of Their Volume But, Not Always. Reason : Gases Deviate From Ideal Behaviour.

Modified 239 Year Ago Adam

800
Adam
239 Year Ago

Assertion : Gases Combine In Simple Ratio Of Their Volume But, Not Always. Reason : Gases Deviate From Ideal Behaviour.

0 votes
0 Answer
748 views

A Sample Of Phosphorus Trichloride (PCL3) Contains 1.4 Moles Of The Substance. How Many Atoms Are There In Atoms Sample

Modified 240 Year Ago Sangeeta

748
Sangeeta
240 Year Ago

A Sample Of Phosphorus Trichloride (PCL3) Contains 1.4 Moles Of The Substance. How Many Atoms Are There In Atoms Sample

0 votes
0 Answer
627 views

The Significant Figures In 34.00 Are

Modified 239 Year Ago Sangeeta

627
Sangeeta
239 Year Ago

The Significant Figures In 34.00 Are

0 votes
0 Answer
474 views

The Passege Of Current Liberates H2 At Cathode And CL2 At Anode. The Solution Is

Modified 233 Year Ago Vipul

474
Vipul
233 Year Ago

The Passege Of Current Liberates H2 At Cathode And CL2 At Anode. The Solution Is

0 votes
0 Answer
458 views

Assertion : Atoms Can Neither Be Created Nor Destroyed. Reason : Under Similar Condition Of Temperature And Pressure, Equal Volume Of Gases Does Not Contain Equal Number Of Atoms.

Modified 239 Year Ago Jennifer

458
Jennifer
239 Year Ago

Assertion : Atoms Can Neither Be Created Nor Destroyed. Reason : Under Similar Condition Of Temperature And Pressure, Equal Volume Of Gases Does Not Contain Equal Number Of Atoms.

0 votes
0 Answer
395 views

In Br3O8 Compound, Oxidation Number Of Bromine Is

Modified 1 Year Ago Rose

395
Rose
1 Year Ago

In Br3O8 Compound, Oxidation Number Of Bromine Is

0 votes
0 Answer
394 views

Assertion : A Certain Element X, Forms Three Binary Compounds With Chlorine Containing 59.68%, 68.95% And 74.75% Chlorine Respectively. Reason : According To Law Of Multiple Proportions, The Relative

Modified 239 Year Ago Ryan

394
Ryan
239 Year Ago

Assertion : A Certain Element X, Forms Three Binary Compounds With Chlorine Containing 59.68%, 68.95% And 74.75% Chlorine Respectively. Reason : According To Law Of Multiple Proportions, The Relative

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