# Worksheet: Electron Pair and Molecular Geometries

In this worksheet, we will practice classifying the bond and electron pair arrangements and identifying the ideal angles of common molecular geometries.

**Q1: **

Nitrogen and phosphorus atoms can both form bonds with three fluorine atoms. However, only phosphorus atoms can form bonds with five fluorine atoms.

Which term best describes the bonding geometry in and ?

- ABent
- BT-shaped
- CTetrahedral
- DTrigonal pyramidal
- ETrigonal bipyramidal

Which term best describes the bonding geometry in ?

- ATrigonal bipyramidal
- BTetrahedral
- COctahedral
- DSquare pyramidal
- EPentagonal planar

Why is it not possible for to form?

- AOnly the atom possesses valence d orbitals.
- BThere is insufficient space around the atom for five bonds to form.
- CThe high electronegativity of the atom prevents sharing of electron density in five bonds.
- DThe lone pair in is more stable than two additional bonds.
- EOnly the atom contains d electrons in its valence shell.

**Q2: **

The bonding geometry is the same in all but one of the following molecules. In which molecule is the geometry different?

- A
- B
- C
- D
- E

**Q3: **

The bonding geometry is the same in all but one of the following molecules and ions. In which species is the geometry different?

- A
- B
- C
- D
- E

**Q8: **

Sulfur tetrafluoride, , is extremely valuable for the preparation of fluorine-containing compounds used as herbicides (i.e., is used as a fluorinating agent).

What is its electron pair geometry?

- ATetrahedral
- BSquare pyramidal
- CSquare planar
- DOctahedral
- ETrigonal bipyramidal

What is its molecular geometry?

- AOctahedral
- BTrigonal bipyramidal
- CSquare planar
- DTetrahedral
- ESeesaw

**Q9: **

What is the electron pair geometry of ?

- AIcosahedral
- BOctahedral
- CSquare pyramidal
- DHexagonal planar
- ESquare bipyramidal

What is the electron pair geometry of ?

- ATrigonal bipyramidal
- BOctahedral
- CPentagonal planar
- DSquare pyramidal
- ETetrahedral

What is the electron pair geometry of ?

- ABent
- B
- CTrigonal
- DLinear
- ETetrahedral

What is the electron pair geometry of ?

- AT-shaped
- BTrigonal planar
- CBent
- DTrigonal pyramidal
- ETetrahedral

**Q10: **

What is the difference between electron pair geometry and molecular geometry?

- AMolecular geometry is concerned with the rough shape of the entire molecule, while electron pair geometry is concerned with the geometry around a single atom.
- BElectron pair geometry accounts for outer-shell electrons as well as atoms, while molecular geometry is concerned with inner-shell electrons.
- CElectron pair geometry accounts for lone pairs as well as atoms, while molecular geometry is concerned only with the atoms.
- DElectron pair geometry accounts for inner-shell electrons as well as outer-shell electrons, while molecular geometry is concerned only with the atoms.
- EMolecular geometry accounts for lone pairs as well as atoms, while electron pair geometry is concerned only with the atoms.