Sage-Tips

Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramid shape?

Which best compares a molecule that has a trigonal planar shape with one that has a trigonal pyramidal shape? They both contain three atoms around the central atom.

What are the five basic shapes under Vsepr theory?

The VSEPR theory describes five main shapes of simple molecules: linear, trigonal planar, tetrahedral, trigonal bipyramidal, and octahedral.

What is the molecular shape of xeo2f2?

trigonal bipyramidal
XeO2F2 molecular geometry is originally said to be trigonal bipyramidal but due to the presence of lone pair on equatorial position, the actual shape will be see-sawed. The repulsion between bond pair and lone pair of electrons will be more.

What is the relationship between groups on the periodic table and molecular geometries?

Electron-group geometry is determined by the number of electron groups. Molecular geometry, on the other hand, depends on not only on the number of electron groups, but also on the number of lone pairs. When the electron groups are all bond pairs, they are named exactly like the electron-group geometry.

How do you explain molecular geometry?

Molecular geometry is the three-dimensional arrangement of the atoms that constitute a molecule. It includes the general shape of the molecule as well as bond lengths, bond angles, torsional angles and any other geometrical parameters that determine the position of each atom.

How are these two trigonal geometries different?

Two molecules have the same molecular geometry but different electron domain geometries. The central atom of the trigonal planar molecule has two atoms around it, but the central atom of the trigonal pyramidal molecule has only one. They both contain three atoms around the central atom.

How do you determine the shape and molecular geometry?

1. VSEPR Rules:
2. Identify the central atom.
3. Count its valence electrons.
4. Add one electron for each bonding atom.
5. Add or subtract electrons for charge (see Top Tip)
6. Divide the total of these by 2 to find the total.
7. number of electron pairs.
8. Use this number to predict the shape.

What are the molecular orbitals in octahedral complexes?

In octahedral complexes, the molecular orbitals created by the coordination of metal centre can be seen as resulting from the donation of two electrons by each of six a-donor ligands to the d-orbitals on the metal. The metal orbitals taking part in this type of bonding are nd, (n+ l)p and (n+ l)s.

What are the basic molecular geometry?

Basic Molecular Geometries (or Shapes) where the Central Atom has No Lone Pairs. Consider a molecule composed of only two types of atoms, A and B: A=central atom B=outer atoms. For three or more atoms in a molecule, general formula: AB# (where #=2-6) AB2: linear. – the two outer atoms are 180° from each other.

What are lone pairs in molecular geometry?

Molecular Geometries (or Shapes) where the Central Atom Does Have Lone Pairs. Predicting the shape of molecules where the central atom has lone pairs is somewhat more difficult. Even though the lone pairs cannot be seen, they are still electrons which repel the bonding pairs of electrons.

What is the molecular geometry of ab5e?

Molecular Geometries Where Central Atom Has Lone Pairs (Continued) Molecular Geometries from Octahedral AB5E: square pyramidal (central atom + 5 B atoms make 4-faced pyramid) start with AB6 (octahedral) and replace one B atom with one lone pair