# What is seesaw shape in chemistry?

## What is seesaw shape in chemistry?

Seesaw Shaped (AX4E) The central atom is surrounded by four adjacent atoms, two on the same plane (axial) and two below (equatorial). This shape is caused by a lone pair of electrons on the central atom. An example of a seesaw shaped molecule is sulfur tetrafluoride, or SF4.

### Why SF4 is seesaw shape?

Sulphur tetra-fluoride has 10 electrons around the central sulphur atom. This means there are five electron pairs arranged in a truncated trigonal bi-pyramidal (i.e. see saw) shape. SF4 has the two axial fluorines bent slightly back toward the other two fluorine atoms.

#### Is trigonal pyramidal the same as seesaw?

No, seesaw and trigonal pyramidal are not the same shape. As aforementioned, seesaw has one lone pair and four bonding pairs while trigonal pyramidal has one lone pair and three bonding pairs.

**What are the bond angles of seesaw?**

Thus, the bond angles of the atoms are 180 degrees from each other….Molecular Geometry of the Trigonal Bipyramidal Structures.

Number of Lone pairs | Geometry | Bond Angles |
---|---|---|

0 | Trigonal Bipyramidal | 90 and 120 |

1 | Seesaw | 90 and 120 |

2 | T-Shaped | 90 |

3 | Linear | 180 |

**What are the bond angles of a seesaw?**

SF 4

## How to calculate bond angles?

Convert Input (s) to Base Unit

### How would I know the bond angles in a molecule?

1) Get the group number of the primary element 2) If its a negative charge, add that to the group number from 1) or subtract the positive charge 3) Add the bonded pairs 4) Divide by 2 to get the bonded pairs 5) Now subtract the bonded pairs by the number of bonds to find the loan pairs.

#### How do you calculate molecular geometry?

You should note that to determine the shape (molecular geometry) of a molecule you must write the Lewis structure and determine the number of bonding groups of electrons and the number of non-bonding pairs of electrons on the central atom, then use the associated name for that shape.