Question

What are the geometrical shapes that VSEPR theory predicts for these molecules or ions:

Cl2O

H3O+

AsF4+

ONF3

Answer 1

According to VSEPR theory, it is first considered that in an inorganic compound the atom which is most electropositive, considered as the central atom of the compound.

Then total number of valence shell electrons of the central atom is calculated. Depending upon the the number of valence shell electrons ,the geometrical shapes of the compounds are identified.

Applying VSEPR theory, the geometrical shape of the each compounds are shown below.

(1) clo ince oxygen (o) is less stacteronagative electers negative than that of chlorine (e), this oxygen is the central atom of clzo. Electronic configuration of oxygen is - s : 1572572pt. Thans number of elentewns in the outer shed is (200)=b . Each chlorine atom donate one eletown to anoygen to form clzo. ... Thus tofal member of Valence shell elenterons ne (6+2) = 8. Aceording to NSEPR theory, if the tofal numbers of watenae shell electrons are equalto then it should be Tetrahedral. algo is a tetrahedral compound. So Its structure is - Ingeneral, though hydrogen is more elenters positive tham onaggen but it is considered that oxygen is the central atom of the ot. :. Total number of valence shell stentoons (6+3-1) =8 r3 comes from 34. 1-1 comes from the chapel

and is tetrahedral, in a The strmeture is - cling Asfat since As As is the is more electropositive than F Hins central atom. The total number of rabence shell abertrons . (5+4-1) + 5 comes from As. I a comes from af y comes from the charge Thans according to VSEPR theory, Asfit is a tetrahedral compound. The structure is - AH ON F3 since N is more electronegative than both O and o thuns N acts as the central atom. when anorggen is in teronninal position then it forms a abond and a aflond. Total no. of elections in Valence shell is (5+3 +11) 15 comes from Nitrogen. ay = 8 tetrahedral) 3 comes from Br! F +1 comes from an-obond. - f I comes from a N-a bond]