None. helium doesnt react with any other element
None, just like Neon. However, I've heard that Helium can bond briefly sometimes, but artificially induced in a lab under great pressure, etc. This isn't officially proved yet.
It makes two covalent bonds which completes its octet.
A molecule of ethene contains 6 covalent bonds, namely 5 sigma bonds and a pi bond.
Si has four valence electrons so silicon need to make four covalent bond.
Only one covalent bond.
4
Phosphorus typically forms three covalent bonds.
It has four covalent bonds.They are polar bonds
maximum of five single covalent bonds as in PCl5
None, just like Neon. However, I've heard that Helium can bond briefly sometimes, but artificially induced in a lab under great pressure, etc. This isn't officially proved yet.
A carbon atom can form 4 single covalent bonds
It makes two covalent bonds which completes its octet.
The number of covalent bonds depends on the compound it makes. Xenon can make maximum of six covalent bond (as in XeF6) and minimum of 2 as in (XeF2).
A haloalkane has the same number of covalent bonds as the corrresponding unhalogenated alkane.
Nitrogen tetroxide has four double covalent bonds.
None of the bonds in H2SO4 are coordinate covalent bonds. All the bonds in H2SO4 are regular covalent bonds formed by shared electron pairs between atoms.
Nitrogen can form three covalent bonds when it has no negative charge.