Question

RESULTS (The choices of electron pair geometry and molecular shape are linear, bent, trigonal planar, trigonal pyramidal, and tetrahedral) /The lone pairs' refers to the value for the whole molecule or ion; not the central atom/ valence electrons Molecule Bromine, Br bond pairs lone pairs sigma bonds pi bonds electron pair geometry molecular shape polar or nonpolar Lewis Structure: Molecule Water, H2O Lewis Structure: valence electrons bond pairs lone pairs sigma bonds pi bonds electron pair geometry molecular shape polar or nonpolar Molecule Carbon tetrachloride, CCl Lewis Structure: valence electrons bond pairs lone pairs sigma bonds pi bonds electron pair geometry molecular shape polar or nonpolar Molecule Chloroform, CHCla Lewis Structure: valence electrons bond pairs lone pairs sigma bonds pi bonds electron pair geometry molecular shape polar or nonpolar

Answer 1

Answer : Molecule Br₂ : Lewis Structure

B2: By:

Valance electrons = 14

Bond pairs = 1

Lone pairs = 6

Sigma bonds = 1

Pi-bonds = 0

Electron pair geometry = tetrahedral**** with respect to both 'Br' atoms

Molecular shape = Linear

Polar or non-polar : Br2 is a non- polar molecule because it is symmetrical.

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Molecule : H₂O Lewis Structure

H: 0 0:

Valance electrons : 8

Bond pairs = 2

Lone pairs = 2

Sigma bonds= 2

Pi-bond = 0

Electron pair geometry = Tetrahedral

Molecular shape = Bent shape

H2O is a polar molecule.

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Molecule: CCl₄

_{:cl: clic: ice:}

Valance electrons: 32

Bond pairs = 4

Lone pairs = 12

Sigma bonds = 4

Pi-bonds = 0

Electron Pair Geometry : Tetrahedral

Molecular shape : Tetrahedral

CCl4 is a non-polar molecule.

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Molecule CHCl₃ Lewis Structure:

NH: c:u:

Valance electrons: 26

Bond pairs : 4

Lone pairs : 9

Pi- bonds : 0

Electron pair Geometry : Tetrahedral

Molecular shape : Tetrahedral

CHCl3 is a polar molecule.

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