Long Answer TypeDefine moleuclar orbital. What are the salient features of Molecular orbital theory?
Short Answer TypeLong 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.
(i) Combination of 1s and 1s atomic orbitals gives rise two molecular orbital such as bonding and antibonding : 
(ii) Combination of 2py and 2py atomic orbitals gives rise to give two molecular orbitals, such as bonding and antibonding: 
(iii) The combination of 2pz and 2pz atomic orbitals gives rise to give two molecular orbitals such as bonding and antibonding molecular orbital.
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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