Number of chemical bonds of SiO2, Si, CH4, P4? What is the number of chemical bonds of SiO2, Si, CH4 and P4? Please attach the necessary analysis...

Number of chemical bonds of SiO2, Si, CH4, P4? What is the number of chemical bonds of SiO2, Si, CH4 and P4? Please attach the necessary analysis...

Are you asking how many chemical bonds there are?
Only polar covalent bonds (Si-O, C-H) and nonpolar covalent bonds (Si-Si, P-P).
Atomic crystals are spatially stereo - reticulated, infinitely extensible, with few covalent bonds.
Methane and white phosphorus are molecular crystals, each with four covalent bonds.
SiO2 has 4 covalent bonds per Si and 2 covalent bonds per O, so the ratio is 2:1,
Since SiO2 does not exist as a single molecule, the number of covalent bonds can not be counted as a single molecule
Si Each Si has four covalent bonds to the other four Si
Si also does not exist as a single molecule, so the number of covalent bonds can not be counted as a single molecule
CH4 Each CH4 molecule has four covalent bonds (all C-H bonds)
Each P4 molecule has six covalent bonds, each P atom has three covalent bonds to the other three P atoms.
The P4 molecule forms a tetrahedral structure with a bond angle of 60 degrees

How many Si-Si bonds are there in 1 mol Si and how many Si-O bonds are there in 1 mol SiO2?

1Mol Si contains 2mol Si-Si bond,1mol SiO2 contains 4mol Si-O bond.