Long Answer TypeDefine moleuclar orbital. What are the salient features of Molecular orbital theory?
Short Answer TypeGive three points of difference between hybrid orbitals and molecular orbitals ?
| Hybrid orbitals | Molecular orbitals |
| 1. Valence atomic orbitals are involved. | 1. All orbitals are involved. |
| 2. Atomic orbitals of one atom are used in the formation of hybrid orbitals. | 2. Atomic orbitals of two or more atoms are involved in the formation of molecular orbitals. |
| 3. Hybrid orbitals are of equal energy. | 3. Molecular orbitals are of different energies. |
Long Answer TypeWhat is a linear combination of atomic orbitals (LCAO) far obtaining molecular orbitals ?
Write the important conditions required for the linear combination of atomic orbitals to form molecular orbitals.
Short Answer TypeAssuming Z-axis as molecular (or internuclear) axis, label the molecular orbtials formed by the following combinations of atomic orbitals: (i) 1 s + 1 s (ii) 2py – 2pv (iii) 2Pz – 2pz.
Long Answer TypeDiscuss the shapes of molecular orbitals formed by the combination of the following atomic orbitals. (lateral overlap)
(i)2px + 2py (ii) 2pz – 2pz
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