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Neon and Heteronuclear Diatomic Molecules

12. Draw the ...

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12. Draw the Lewis dot structure of NO_3^- and calculate number of bond pairs and lone pairs in central atom

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Q. Total number of bond pairs around sulphur and total number of lone pairs by around oxygen atom in the lewis structure sulphate ions are respectively?

Q. The total number of Bond pairs around Sulphur and total number of lone pair on oxygen atom in Lewis structure sulphate Ion are respectively.

Q. In the Lewis structure for the

O F_{2}

molecule, the number of lone pairs of electrons around the central oxygen atom is:

Q. Which of the following molecule/species is having maximum number of lone pairs in Lewis-dot structure?

Q. By the following method you can predict the geometrical shape of species with only one central atom, without first drawing the Lewis structure :
Total number of electron pairs = (number of valence electrons

\pm

electrons (for ionic) charge)/2
Number of bond electron pairs = number of atoms - 1
Number of electron pairs around central atom = total number of electron pairs - 3 [number terminal atoms (except H)]
Number lone pair = (number of central electron pairs - number of bond pairs)

How many of the following have trigonal bipyramidal shape based on this method?

(a) P C l_{5} (b) N H_{3} (c) H_{2} O

(d) {C l O_{3}}^{-} (e) {I C l_{4}}^{-}

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Neon and Heteronuclear Diatomic Molecules

Standard XII Chemistry

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