1. HPO3
2. H3PO3
3. H3PO2
4. H4P2O7
H3PO2
1. 3 pi and 12 sigma bonds
2. 9 pi and 3 sigma bonds
3. 6 pi and 12 sigma bonds
4. 4 pi and 8 sigma bonds
3 pi and 12 sigma bonds
1. H3PO2
2. H3PO3
3. H3PO4
4. H4P2O7
H3PO4
1. sp
2. sp2
3. sp3
4. sp3d
sp2
1. Canonical structures
2. Contributing structures
3. Metamer
4. Resonance hybrid
Resonance hybrid
1. NH3,PH3,AsH3
2. AsH3,PH3,NH3
3. NH3,AsH3,PH3
4. PH3,AsH3,NH3
PH3,AsH3,NH3
1. C6H6
2. C2H2
3. C2H4Cl4
4. C2H4Cl2
C2H2
1. One type
2. Two types
3. Three types
4. Six types
One type
1. PCl5
2. CCl4
3. PCl3
4. POCl3
PCl5
1. Kekule
2. Dennis
3. Whytlaw – Gray
4. Wohler
Kekule