4-coordinate: tetrahedral (p-block element, 3 lone pairs)

[Xe{Hg(SbF₆)([Sb₂F₁₁)}]²⊕

Formula Unicode styled: 
[Xe{Hg(SbF₆)([Sb₂F₁₁)}]²⊕
Compound name(s): 
[(undecafluorodoantimonate-hexafluoroantimonate-mercury)-xenon](2+)
Central atom: 
Xenon
Attached groups: 
Hg group (Z type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Xe«V2C1OOE8B1L0X0Z1»
[MLXZ]𝘲 class: 
[MZ1]
MLXZ class (ENC, equivalent neutral class): 
MZ1

[Xe{Au(CF₃)}]⊕

Formula Unicode styled: 
[Xe{Au(CF₃)}]⊕
Compound name(s): 
(trifluoroarsane-gold)-xenon(1+)
Central atom: 
Xenon
Attached groups: 
Au group (X type)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Xe«V2C1OOE8B1Z0L0X1»⊕
[MLXZ]𝘲 class: 
[MX1]+
MLXZ class (ENC, equivalent neutral class): 
MZ1

[Xe(OTeF₅)]⊕

Formula Unicode styled: 
[Xe(OTeF₅)]⊕
Compound name(s): 
pentafluorotellurato-xenon(1+)
Central atom: 
Xenon
Attached groups: 
OTeF₅ (pentafluorooxytellurium)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (II)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Xe«V2C1OIIE8B1Z0L0X1»⊕
[MLXZ]𝘲 class: 
[MX1]+
MLXZ class (ENC, equivalent neutral class): 
MZ1

[F(Py)]⊕

Formula Unicode styled: 
[F(Py)]⊕
Compound name(s): 
fluoropyridine(1+), (N-Fluoropyridinium)
Central atom: 
Fluorine
Attached groups: 
Py (pyridine)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
F«V1C1O-IE8B1Z0X0L1»⊕
[MLXZ]𝘲 class: 
[ML1]+
MLXZ class (ENC, equivalent neutral class): 
MX1

[F(NO)]

Formula Unicode styled: 
[F(NO)]
Compound name(s): 
Nitrosyl fluoride
Central atom: 
Fluorine
Attached groups: 
NO (nitrosyl X)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
F«V1C1O-IE8B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[O(H)⊖]

Formula Unicode styled: 
[O(H)(⊖)]
Compound name(s): 
hydroxide(1-)
Central atom: 
Oxygen
Attached groups: 
H (hydrido)
e⊖ (non-bonding)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-II)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C1O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[O(H)(SeO₂-κSe)]⊖

Formula Unicode styled: 
[O(H)(SeO₂-κSe)]⊖
Compound name(s): 
trihydroxyelenium(1-), selenate
Central atom: 
Oxygen
Attached groups: 
H (hydrido)
SeO₂ (dioxoselenium-κSe Z)
Charge on central atom: 
-1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-II)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C2O-IIE8B2L0X1Z1»⊖
[MLXZ]𝘲 class: 
[MX1Z1]-
MLXZ class (ENC, equivalent neutral class): 
MX2

[O{C(OMe)Me}]

Formula Unicode styled: 
[O{C(OMe)Me}]
Compound name(s): 
Methyl acetate
Central atom: 
Oxygen
Attached groups: 
C group (X₂ type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-II)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C1O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[O=IO₃)]³⊖

Formula Unicode styled: 
[O=IO₃)]³⊖
Compound name(s): 
pentaoxoiodine(3-)
Central atom: 
Oxygen
Attached groups: 
I group (X₂ type)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-II)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C1O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[O(IO₃-κI)⊖]

Formula Unicode styled: 
[O(IO₃-κI)(⊖)]
Compound name(s): 
metaperiodate(1-)
Central atom: 
Oxygen
Attached groups: 
IO₃ (iodato-κI)
e⊖ (non-bonding)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-II)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C1O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[O(MnO₃)⊖]

Formula Unicode styled: 
[O(MnO₃)(⊖)]
Compound name(s): 
tetraoxomanganese(1-), permanganate
Central atom: 
Oxygen
Attached groups: 
MnO₃ (trioxo-manganese)
e⊖ (non-bonding)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-II)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C1O-IIE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[O(OH)⊖]

Formula Unicode styled: 
[O(OH)(⊖)]
Compound name(s): 
hydroxy-oxygen(1-)
Central atom: 
Oxygen
Attached groups: 
OH (hydroxo)
e⊖ (non-bonding)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (-I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
O«V2C1O-IE8B2Z0L0X2»
[MLXZ]𝘲 class: 
[MX2]
MLXZ class (ENC, equivalent neutral class): 
MX2

[I(NI₂)]

Formula Unicode styled: 
[I(NI₂)]
Compound name(s): 
catena-nitrogen triiodide
Central atom: 
Iodine
Attached groups: 
NI₂ (diiodoamino)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
I«V1C2OIE8B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[Xe(C₆F₅)]⊕

Formula Unicode styled: 
[Xe(C₆F₅)]⊕
Compound name(s): 
pentafluorophenyl-xenon
Central atom: 
Xenon
Attached groups: 
C₆F₅ (pentafluorophenyl)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 2
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Xe«V2C1OOE8B1Z0L0X1»⊕
[MLXZ]𝘲 class: 
[MX1]+
MLXZ class (ENC, equivalent neutral class): 
MZ1