EN: 18

[Np(Cl)₃(Py)₄]

Formula Unicode styled: 
[Np(Cl)₃(Py)₄]
Compound name(s): 
trichloro-tetrakis(pyridine)-neptunium
Central atom: 
Neptunium
Attached groups: 
Cl (chloro)
Py (pyridine)
Charge on central atom: 
0
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: 7
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 18
Summary of calculated classifications: 
Np«V3C7OIIIE18B7Z0X3L4»
[MLXZ]𝘲 class: 
[MX3L4]
MLXZ class (ENC, equivalent neutral class): 
MX3L4