AX5 AX4E AX3E2 and AX2E3

Molecular Shapes (AX₅, AX₄E, AX₃E₂ and AX₂E₃ Configurations)

Molecules in this category may have three, four, five or six atoms. The configuration is specified as AX₅ for the case with six total atoms and AX₄E for the case with five atoms, AX₃E₂for the case with four and AX₂E₃for the case with three. Remeber the "E" represents electron groups that are not involved in bonding, the "X" atoms around the central atom and the "A" is the central atom. Molecules of the type AX₅ are trigonal bipyramidal, molecules of the type AX₄E are seesaw, molecules of the type AX₃E₂ are T-shaped, and molecules of the type AX₂E₃ are linear. Example AX₅ Molecules (Trigonal Bipyramidal)