CN: 8

[Np{O=C(NH₂)₂}₈]⁴⊕

Formula Unicode styled: 
[Np{O=C(NH₂)₂}₈]⁴⊕
Compound name(s): 
octakis(Urea)-neptunate
Central atom: 
Neptunium
Attached groups: 
O=C(NH₂)₂ (urea)
Charge on central atom: 
4
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: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 19
Summary of calculated classifications: 
Np«V4C8OIVE19B8Z0X0L8»4⊕
[MLXZ]𝘲 class: 
[ML8]4+
MLXZ class (ENC, equivalent neutral class): 
MX4L4

[Np(NCS-κN)₈]⁴⊖

Formula Unicode styled: 
[Np(NCS-κN)₈]⁴⊖
Compound name(s): 
octakis(isothiocyanato)-neptunate
Central atom: 
Neptunium
Attached groups: 
NCS (isothiocyanato-κN)
Charge on central atom: 
-4
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: 8
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 19
Summary of calculated classifications: 
Np«V4C8OIVE19B8Z0L0X8»4⊖
[MLXZ]𝘲 class: 
[MX8]4-
MLXZ class (ENC, equivalent neutral class): 
MX4L4