Gas

[H(NCO)]

Formula Unicode styled: 
[H(NCO)]
Compound name(s): 
Isocyanic acid
Central atom: 
Hydrogen
Attached groups: 
NCO (isocyanato-κN)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1OIE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[H(CH=CH₂)]

Formula Unicode styled: 
[H(CH=CH₂)]
Compound name(s): 
Ethene
Central atom: 
Hydrogen
Attached groups: 
CH=CH₂ (vinyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1OIE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[H(C₄H₇)]

Formula Unicode styled: 
[H(C₄H₇)]
Compound name(s): 
Cyclobutane
Central atom: 
Hydrogen
Attached groups: 
C₄H₇ (cyclobutyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1OIE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[H(C₃H₅)]

Formula Unicode styled: 
[H(C₃H₅)]
Compound name(s): 
Cyclopropane
Central atom: 
Hydrogen
Attached groups: 
C₃H₅ (cyclopropyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1OIE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[H(C≡CH)]

Formula Unicode styled: 
[H(C≡CH)]
Compound name(s): 
Ethyne|Acetylene
Central atom: 
Hydrogen
Attached groups: 
C≡CH (ethynyl)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 1
Oxidation Number (ON) (Roman numerals): 
ON: (I)
Coordination Number (CN, sum of attached group denticities): 
CN: 1
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
H«V1C1OIE2B1Z0L0X1»
[MLXZ]𝘲 class: 
[MX1]
MLXZ class (ENC, equivalent neutral class): 
MX1

[Xe]

Formula Unicode styled: 
[Xe]
Compound name(s): 
xenon
Central atom: 
Xenon
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 0
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 0
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Xe«V0C0OOE8B0Z0L0X0»
[MLXZ]𝘲 class: 
[M]
MLXZ class (ENC, equivalent neutral class): 
M

[Kr]

Formula Unicode styled: 
[Kr]
Compound name(s): 
krypton
Central atom: 
Krypton
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 0
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 0
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Kr«V0C0OOE8B0Z0L0X0»
[MLXZ]𝘲 class: 
[M]
MLXZ class (ENC, equivalent neutral class): 
M

[Ar]

Formula Unicode styled: 
[Ar]
Compound name(s): 
argon
Central atom: 
Argon
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 0
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 0
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Ar«V0C0OOE8B0Z0L0X0»
[MLXZ]𝘲 class: 
[M]
MLXZ class (ENC, equivalent neutral class): 
M

[He]

Formula Unicode styled: 
[He]
Compound name(s): 
helium
Central atom: 
Helium
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 0
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 0
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 2
Summary of calculated classifications: 
He«V0C0OOE2B0Z0L0X0»
[MLXZ]𝘲 class: 
[M]
MLXZ class (ENC, equivalent neutral class): 
M

[Rn]

Formula Unicode styled: 
[Rn]
Compound name(s): 
radon
Central atom: 
Radon
Attached groups: 
(no ligand)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 0
Oxidation Number (ON) (Roman numerals): 
ON: (O)
Coordination Number (CN, sum of attached group denticities): 
CN: 0
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
Rn«V0C0OOE8B0Z0L0X0»
[MLXZ]𝘲 class: 
[M]
MLXZ class (ENC, equivalent neutral class): 
M

[P(H)₃]

Formula Unicode styled: 
[P(H)₃]
Compound name(s): 
Phosphane
Phosphine
Phosphorus trihydride
Central atom: 
Phosphorus
Attached groups: 
H (hydrido)
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: 3
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V3C3OIIIE8B3Z0L0X3»
[MLXZ]𝘲 class: 
[MX3]
MLXZ class (ENC, equivalent neutral class): 
MX3

[P(F)₃(F₂)]

Formula Unicode styled: 
[P(F)₃(F₂)]
Compound name(s): 
pentafluorophosphane
pentafluorophosphine
phosphoric fluoride
phosphorus(V) fluoride
Central atom: 
Phosphorus
Attached groups: 
F (fluoro)
F₂ (difluoro X Ⓢ)
Charge on central atom: 
0
Compound type: 
Molecular
Valence Number (VN) = 𝘹 + 2𝘻 : 
VN: 5
Oxidation Number (ON) (Roman numerals): 
ON: (V)
Coordination Number (CN, sum of attached group denticities): 
CN: 5
Electron Number (EN) = 𝘮 + 𝘹 +2𝘭: 
EN: 8
Summary of calculated classifications: 
P«V5C5OVE8B4L0X3Z1»
[MLXZ]𝘲 class: 
[MX3Z1]
MLXZ class (ENC, equivalent neutral class): 
MX3Z1