Sage-Tips

Can two molecules with different electron geometries have the same molecular geometry?

It doesn’t matter if they occupied or not. So these two structures, these two structures, they both have tetra head roll electron geometry because both of them has for electron groups around central atom. So the molecular geometry is to see if they are occupied or not the same two structures.

What happens to the bond angle as you increase the number of bonding groups?

However the bond angle increases with increase in the size of ligand atoms, which surround the central atom. There is less repulsion between smaller ligand atoms and they can move closer to each other and thus decrease the bond angle.

What causes molecules with the same number of electron domains to have different shapes?

When a bond forms, the repulsion between the electron pairs cause them to move as far away from each other as possible. This produces a unique geometrical pattern in the molecule. So, if a molecule has only two electron pairs, like that in CO2 , the two bond pairs repel each other and move the farthest from each other.

What causes molecules to have different molecular geometries?

VSEPR theory is based on the idea that the geometry (shape) of a molecule is mostly determined by repulsion among the pairs of electrons around a central atom. The pairs of electrons may be bonding or non-bonding (also called lone pairs).

How many electron groups are around the central atom’s in the SO2 molecule?

three electron groups
The central atom, sulfur, has 6 valence electrons, as does each oxygen atom. With 18 valence electrons, the Lewis electron structure is shown below. 2. There are three electron groups around the central atom, two double bonds and one lone pair.

How does bond angle increase?

As more electron density remains on the central atom, electron repulsion between the bonded pairs increases and bond angles increase.

Under what conditions is it possible to have the same geometry but different number of electrons?

The electron-pair geometries will be the same as the molecular structures when there are no lone electron pairs around the central atom, but they will be different when there are lone pairs present on the central atom.

How does both the number and type of electron pairs influence the shape of a molecule?

The total number of electron pairs, both bonding pairs and lone pairs, leads to what is called the electron domain geometry. When one or more of the bonding pairs of electrons is replaced with a lone pair, the molecular geometry (actual shape) of the molecule is altered.

Why do molecules with the same number of atoms have different shapes?

Interactive: Electron Geometry: Molecules assume different shapes due to patterns of shared and unshared electrons. In these examples all electrons affecting the shape of the molecules are shared in the covalent bonds holding the atoms together to form the molecules.

What is the difference between electron geometry and molecular geometry?

The molecular geometry definition in chemistry is the arrangement of atoms in relation to a central atom in three-dimensional space. Electron geometry is the arrangement of electron groups.

What’s the difference between electron domain geometry and molecular geometry?

The main difference between electron geometry and molecular geometry is that electron geometry is found by taking both lone electron pairs and bonds in a molecule whereas molecular geometry is found using only the bonds present in the molecule.

What is the molecular geometry of a molecule with multiple bonds?

We need to recognize that multiple bonds should be treated as a group of electron pairs when arriving at the molecular geometry. The basic geometry for a molecule containing a central atom with three pairs of electrons is trigonal planar. BF 3 is an example.

What is the difference between bonding groups/domains and bonding pairs?

In the table below the term bonding groups/domains (second from the left column) is used in the column for the bonding pair of electrons. Groups is a more generic term. Group is used when a central atom has two terminal atoms bonded by single bonds and a terminal atom bonded with two pairs of electrons (a double bond).

What is the basic geometry for a molecule containing 5 electrons?

The basic geometry for a molecule containing a central atom with five pairs of electrons is trigonal bipyramidal. An example of this geometry is PCl 5.

What is the bond angle for bent molecular geometry?

For bent molecular geometry when the electron-pair geometry is tetrahedral the bond angle is around 105 degrees. Lets consider the Lewis structure for CCl 4. We can draw the Lewis structure on a sheet of paper.