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Sodium metal vaporises on heating and the vapour will have diatomic molecular of sodium `(Na_(2))`. What type of bonding is presetn in these moleculas ? Justify your answer . |
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Answer» Covalent bonds are present in `Na_(2)` . This can be explained on the basis of molecular orbital theory . Electronic configuration of `""_(11)Na = 1s^(2) 2s^(2) 2p^(6) 3s^(1)` . The 3s atomic orbitals of the two sodium atoms combine to form `sigma _(3s) and sigma _(3s)^(**)` molecular orbitals . The two electrons entre into `sigma_(3s)` . Hence, bond order = 1 . Thus , the two sodiium atoms are linked by a single covalent bond . |
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