4-coordinate: tetrahedral (p-block element, 1 lone pair)

[I(OH)(O)₂]

Formula Unicode styled: 
[I(OH)(O)₂]
Compound name(s): 
Iodic acid (hydroxy)(trioxo)iodine
Central atom: 
Iodine
Attached groups: 
OH (hydroxo)
O (oxo O⊖ X)
Charge on central atom: 
2
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
I«V5C3OVE8B3Z0L0X3»2⊕
[MLXZ]𝘲 class: 
[MX3]2+
MLXZ class (ENC, equivalent neutral class): 
MX1Z2

[I(O)₃]⊖

Formula Unicode styled: 
[I(O)₃]⊖
Compound name(s): 
trioxoiodine(1-); iodate
Central atom: 
Iodine
Attached groups: 
O (oxo O⊖ X)
Charge on central atom: 
2
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
I«V5C3OVE8B3Z0L0X3»2⊕
[MLXZ]𝘲 class: 
[MX3]2+
MLXZ class (ENC, equivalent neutral class): 
MX1Z2

[Br(F)₂(O)]⊕

Formula Unicode styled: 
[Br(F)₂(O)]⊕
Compound name(s): 
Difluoro-oxo-bromine(1+)
Central atom: 
Bromine
Attached groups: 
F (fluoro)
O (oxo O⊖ X)
Charge on central atom: 
2
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Br«V5C3OVE8B3Z0L0X3»2⊕
[MLXZ]𝘲 class: 
[MX3]2+
MLXZ class (ENC, equivalent neutral class): 
MX1Z2

[Br(F)(O)₂]

Formula Unicode styled: 
[Br(F)(O)₂]
Compound name(s): 
fluoro-dioxo-bromine
Central atom: 
Bromine
Attached groups: 
F (fluoro)
O (oxo O⊖ X)
Charge on central atom: 
2
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Br«V5C3OVE8B3Z0L0X3»2⊕
[MLXZ]𝘲 class: 
[MX3]2+
MLXZ class (ENC, equivalent neutral class): 
MX1Z2

[Br(O)₃]⊖

Formula Unicode styled: 
[Br(O)₃]⊖
Compound name(s): 
trioxobromine(1-), bromate
Central atom: 
Bromine
Attached groups: 
O (oxo O⊖ X)
Charge on central atom: 
2
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Br«V5C3OVE8B3Z0L0X3»2⊕
[MLXZ]𝘲 class: 
[MX3]2+
MLXZ class (ENC, equivalent neutral class): 
MX1Z2

[Cl(O)₃]⊖

Formula Unicode styled: 
[Cl(O)₃]⊖
Compound name(s): 
trioxoxhlorine(1-)
Central atom: 
Chlorine
Attached groups: 
O (oxo O⊖ X)
Charge on central atom: 
2
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Cl«V5C3OVE8B3Z0L0X3»2⊕
[MLXZ]𝘲 class: 
[MX3]2+
MLXZ class (ENC, equivalent neutral class): 
MX1Z2

[Xe(O)₃]

Formula Unicode styled: 
[Xe(O)₃]
Compound name(s): 
tri-oxo-xenon
Central atom: 
Xenon
Attached groups: 
O (oxo Z)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 6
Oxidation Number (ON) (Roman numerals): 
ON: (VI)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Xe«V6C3OVIE8B3L0X0Z3»
[MLXZ]𝘲 class: 
[MZ3]
MLXZ class (ENC, equivalent neutral class): 
MZ3

[P(Ph)₃]

Formula Unicode styled: 
[P(Ph)₃]
Compound name(s): 
Triphenylphosphane
Triphenylphosphine
Central atom: 
Phosphorus
Attached groups: 
Ph (phenyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(Buᵗ)(Ph)₂]

Formula Unicode styled: 
[P(Buᵗ)(Ph)₂]
Compound name(s): 
t-Butylamino(diphenyl)phosphine
Central atom: 
Phosphorus
Attached groups: 
Buᵗ (t-butyl)
Ph (phenyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(Mes)(Ph)₂]

Formula Unicode styled: 
[P(Mes)(Ph)₂]
Compound name(s): 
Mesityldiphenylphosphine
Central atom: 
Phosphorus
Attached groups: 
Mes (mesityl)
Ph (phenyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(Mes)₃]

Formula Unicode styled: 
[P(Mes)₃]
Compound name(s): 
trimesitylphosphine
Central atom: 
Phosphorus
Attached groups: 
Mes (mesityl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(Me)₃]

Formula Unicode styled: 
[P(Me)₃]
Compound name(s): 
trimethylphosphane
trimethylphosphine
Central atom: 
Phosphorus
Attached groups: 
Me (methyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(I)₃]

Formula Unicode styled: 
[P(I)₃]
Compound name(s): 
Triiodophosphane
Triiodophosphine
Phosphorus triiodide
Phosphorus(III) iodide
Central atom: 
Phosphorus
Attached groups: 
I (iodo)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(H)(Mes)₂]

Formula Unicode styled: 
[P(H)(Mes)₂]
Compound name(s): 
Dimesitylphosphine
Central atom: 
Phosphorus
Attached groups: 
H (hydrido)
Mes (mesityl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(H)(Me)(C₆H₂Buᵗ₃)]

Formula Unicode styled: 
[P(H)(Me)(C₆H₂Buᵗ₃)]
Compound name(s): 
Supermesityl-phenyl-phosphine
Central atom: 
Phosphorus
Attached groups: 
H (hydrido)
Me (methyl)
C₆H₂Buᵗ₃ (2,4,6-tri-t-butylphenyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(H)₃]

Formula Unicode styled: 
[P(H)₃]
Compound name(s): 
Phosphane
Phosphine
Phosphorus trihydride
Central atom: 
Phosphorus
Attached groups: 
H (hydrido)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(H)₂(Mes)]

Formula Unicode styled: 
[P(H)₂(Mes)]
Compound name(s): 
Mesitylphosphine
Central atom: 
Phosphorus
Attached groups: 
H (hydrido)
Mes (mesityl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(F)₂(Mes)]

Formula Unicode styled: 
[P(F)₂(Mes)]
Compound name(s): 
Difluoromesitylphosphine
Central atom: 
Phosphorus
Attached groups: 
F (fluoro)
Mes (mesityl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(F)₂(H)]

Formula Unicode styled: 
[P(F)₂(H)]
Compound name(s): 
Difluorophosphine
Central atom: 
Phosphorus
Attached groups: 
F (fluoro)
H (hydrido)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(F)₂(NH₂)]

Formula Unicode styled: 
[P(F)₂(NH₂)]
Compound name(s): 
Aminodifluorophosphine
Central atom: 
Phosphorus
Attached groups: 
F (fluoro)
NH₂ (amino)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
Oxidation Number (ON) (Roman numerals): 
ON: (III)
Coordination Number (CN, sum of attached group denticities): 
CN: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3