P(OH)₂O (phosphonato-κP)

[C(H)₂{P(OH)₂O}₂]

Formula Unicode styled: 
[C(H)₂{P(OH)₂O}₂]
Compound name(s): 
Methylene-diphosphonic acid
Methylene-bisphosphonic acid
Central atom: 
Charge on central atom: 
0
Compound type: 
Valence Number (VN) = 𝘹 + 2𝘻 : 
Oxidation Number (ON) (Roman numerals): 
Coordination Number (CN, sum of attached group denticities): 
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
Summary of calculated classifications: 
C«V4C4O-IVE8B4Z0L0X4»
[MLXZ]𝘲 class: 
[MX4]
MLXZ class (ENC, equivalent neutral class): 
MX4