4-coordinate: tetrahedral (p-block element, 2 lone pairs)

catena–1D-[Br(PbPh₃)]

Formula Unicode styled: 
catena–1D-[Br(PbPh₃)]
Compound name(s): 
catena-Bromo-triphenyl-lead
Central atom: 
Bromine
Attached groups: 
PbPh₃ (triphenylplumbyl)
Charge on central atom: 
0
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
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: 
Br«V3C2O-IE8B2L0X1Z1»
[MLXZ]𝘲 class: 
[MX1Z1]
MLXZ class (ENC, equivalent neutral class): 
MX1Z1

catena–1D-[Br(PbBr₂)]⊖

Formula Unicode styled: 
catena–1D-[Br(PbBr₂)]⊖
Compound name(s): 
catena-tris(μ-bromo)-lead(1-)
Central atom: 
Bromine
Attached groups: 
PbBr₂ (dibromolead Z)
Charge on central atom: 
-1
Compound type: 
Catena-1D
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
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: 
Br«V3C2O-IE8B2L0X0Z2»⊖
[MLXZ]𝘲 class: 
[MZ2]-
MLXZ class (ENC, equivalent neutral class): 
MX1Z1

[Br(SiMe₃)₂]⊕

Formula Unicode styled: 
[Br(SiMe₃)₂]⊕
Compound name(s): 
bis(trimethylsilyl)bromine(1+)
Central atom: 
Bromine
Attached groups: 
SiMe₃ (trimethylsilyl)
Charge on central atom: 
1
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 3
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: 
Br«V3C2O-IE8B2Z0L0X2»⊕
[MLXZ]𝘲 class: 
[MX2]+
MLXZ class (ENC, equivalent neutral class): 
MX1Z1

[Cl(F)₂]⊕

Formula Unicode styled: 
[Cl(F)₂]⊕
Compound name(s): 
Difluorochlorine(1+)
Central atom: 
Chlorine
Attached groups: 
F (fluoro)
Charge on central atom: 
1
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: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Cl«V3C2OIIIE8B2Z0L0X2»⊕
[MLXZ]𝘲 class: 
[MX2]+
MLXZ class (ENC, equivalent neutral class): 
MX1Z1

[Cl(O)₂]

Formula Unicode styled: 
[Cl(O)₂]
Compound name(s): 
dioxochlorine
Central atom: 
Chlorine
Attached groups: 
O (oxo Z)
O (oxo Z)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 4
Oxidation Number (ON) (Roman numerals): 
ON: (IV)
Coordination Number (CN, sum of attached group denticities): 
CN: 2
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 7
Summary of calculated classifications: 
Cl«V4C2OIVE7B2L0X0Z2»
[MLXZ]𝘲 class: 
[MZ2]
MLXZ class (ENC, equivalent neutral class): 
MZ2