Help me with appropriate answer..

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Chemical Bonding and Molecular Structure

Short Answer Type

201.

Which out of the two molecules - OCS and CS₂ has a higher dipole moment and why ?

938 Views

Long Answer Type

202.

Discuss the applications (or importance) of dipole moment.

122 Views

Short Answer Type

203.

The molecule of SO₂ has a dipole moment. Is the molecule linear or bent? Explain your answer.

231 Views

204.

Predict the dipole moment of;
(i) a molecule of the type AX₄ having a square planar geometry.
(ii) a molecule of the type AX₅ having a trigonal bipyramdial.
(iii) a molecule of the type AX₆ having an octahedral geometry.

606 Views

205.

Which of the two - NH₃ and NF₃ has higher dipole moment and why?

219 Views

206.

What do you understand by resonance?

104 Views

Long Answer Type

207.

Discuss the resonance in CO₂ and O₃molecule.

143 Views

208.

Write the resonance structures for SO₃, NO₂ and $NO subscript 3 superscript minus.$

188 Views

Short Answer Type

209.

Write the resonance structure for:
(i) Benzene (C₆H₆)
(ii) Carbonate ion (CO₃^–)

293 Views

Long Answer Type

210.
What is resonance enthalpy? What is its significance?

The actual enthalpy of the molecule (i.e. enthalpy of resonance hybrid) is always found to be less than the enthalpy of any of its contributing structures. This difference in enthalpy is called resonance enthalpy. It is defined as the difference in enthalpy between the enthalpy of the most stable of the contributing structures and the enthalpy of the actual molecule (resonance hybrid).

Resonance enthalpy = Enthalpy of the most stable contributing structure - enthalpy of resonance hybrid.

Due to the low fo resonance hybrid, it is more stable than any of its contributing structures. In other words, it can be said that resonance hybrid is always more stable because of resonance enthalpy. Larger the resonance enthalpy, more will be the stability of the compound. Also, relative stabilities of two hybrids can be compared in terms of resonance enthalpies.

141 Views