[O(SeO₃-κSe)]²⊖

Formula Unicode styled: 
[O(SeO₃-κSe)]²⊖
Compound name(s): 
tetraoxoselenium(2-), selenate
Central atom: 
Charge on formula unit (QN): 
2–
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Coordination Number (CN, sum of attached group denticities): 
Oxidation Number (ON) (Roman numerals): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Bond number (BN) = 𝘹 + 𝘭 + 𝘻: 
2
[MLXZ]𝘲 class: 
[MZ1]2-
MLXZ class (ENC, equivalent neutral class): 
MX2
Summary of calculated classifications: 
O«V2C1O-IIE8B2L0X0Z1»2⊖
𝘥-electron configuration = 𝘮 – VN: 
𝘥-electron configuration = 𝘮 – ON: 
𝘥-electron configuration = 𝘮 – VN – 𝘲 from [MLXZ]𝘲: 
Attached atoms: 
Se1
Phase: 
InChIKey (see www.inchi-trust.org): 
KUIAMPXVWQIWSD-UHFFFAOYSA-L