Shapes of molecules and electronegativity

Question 1

what does VSEPR stand for

Answer 1

Valence Shell Electron Pair Repulsion Theory

Question 2

what does this theory work on

Answer 2

the VSEPRtheory is based on the idea that there is a repulsion between the pairs of valence electrons in all molecules.

Question 3

how will the atoms arrange themselves

Answer 3

atoms will always tend to arrange themselves in a manner in which this electron pair repulsion is minimalised. This arrangement of the atom determines the geometry or shape of the molecule.

Question 4

what is the VSEPR theory

Answer 4

is a model in chemistry, which is used to predict the shape of individual molecules.

pairs of electrons (in bonds and in lone pairs) repel each othe

Question 5

what determines the geometry of a molecule

Answer 5

repulsion between pairs of electrons around a core atom determines the geometry (shape) of a molecule

Question 6

what electrons effect the shape

Answer 6

Only the core atom’s valence electrons have any effect on the molecule shape.

Question 7

what is the AXE method

Answer 7

TheArepresents thecentral atom

TheXrepresents theterminal atoms(the atoms around the central atom)

TheErepresents the number oflone electron pairssurrounding the central atom

Question 8

what five main shapes of simple molecules does the VSEPR theory describe

Answer 8

1. linear
2. trigonal planar
3. tetrahedral
4. trigonal bipyramidal
5. octahedral.

Question 9

what is AXE notation used for

Answer 9

to determine the shape of the molecule