SeO₂ (dioxoselenium-κSe Z)

[O(Me)(SeO₂-κSe)]⊖

Formula Unicode styled: 
[O(Me)(SeO₂-κSe)]⊖
Compound name(s): 
methyl selenite(1-)
Central atom: 
Oxygen
Attached groups: 
Me (methyl)
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(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(H)(SeO₂-κSe)]⊖

Formula Unicode styled: 
[O(H)(SeO₂-κSe)]⊖
Compound name(s): 
hydrogenselenite(1-)
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(SeO₂-κSe)]²⊖

Formula Unicode styled: 
[O(SeO₂-κSe)]²⊖
Compound name(s): 
trioxoselenium(2-), selenite
Central atom: 
Oxygen
Attached groups: 
SeO₂ (dioxoselenium-κSe Z)
Charge on central atom: 
-2
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-IIE8B2L0X0Z1»2⊖
[MLXZ]𝘲 class: 
[MZ1]2-
MLXZ class (ENC, equivalent neutral class): 
MX2

[N({CH)₅}(SeO₂-κSe)]

Formula Unicode styled: 
[N({CH)₅}(SeO₂-κSe)]
Compound name(s): 
(dioxido-selenium)-pyridine
Central atom: 
Nitrogen
Attached groups: 
(CH)₅ (pentamethanylylidene)
SeO₂ (dioxoselenium-κSe Z)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
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: 
N«V5C3O-IIIE8B4L0X3Z1»
[MLXZ]𝘲 class: 
[MX3Z1]
MLXZ class (ENC, equivalent neutral class): 
MX3Z1