What is VSEPR (Valence Shell Electron Pair Repulsion) Theory ? What are the different geometry of molecules in which the central atom/ion (i) has no lone pair of electrons (ii) has one or more lone pair of electrons and (iii) has bond pair and lone pair ?

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Q. Select the correct code for the following repulsion orders, according to VSEPR theory
(I) lone pair-lone pair

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lone pair-bond pair
(II) lone pair-bond pair

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bond pair-bond pair
(III) lone pair-lone pair

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bond pair-bond pair
(IV) lone pair-bond pair

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lone pair-lone pair

The statement that is true about H₂O molecule is:

Q. According to

V S E P R

theory, the shape of

A B_{3}

type of molecule in which the central atom has one lone pair of electrons:

(i) What is a lone pair of electrons?
(ii) Draw an electron dot diagram of a hydronium ion and label the lone pair of electrons.
(iii) Name a neutral covalent molecule which contains one lone pair of electrons.

Q. The geometry of

C l O_{3}^{-}

ion according to Valence Shell Electron Pair Repulsion (VSEPR) theory will be:

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