Which describes correctly the bonding type and melting point of carbon and carbon-dioxide?

What is the correct order of increasing boiling points?

Which statements about hybridization are correct?

I The hybridization of carbon in diamond is sp³.

II The hybridization of carbon in graphite is sp².

III The hybridization of carbon in C₆₀ fullerene is sp³.

How many sigma and pi bonds are present in a molecule of propyne, CH₃CCH?

Which compound forms hydrogen bonds in the liquid state?

Which molecule has a non-bonding (lone) pair of electrons around the central atom?

Which species does not have delocalized electrons

Which species contain a dative covalent bond?

I HCHO

II CO

III H₃O⁺

Which molecule has an octahedral shape?

Which statements about sigma and pi bonds are correct?

I Sigma bonds result from the axial overlap of orbitals.

II Pi bonds only form from s orbitals.

III Pi bonds result from the sideways overlap of parallel p orbitals.

In which substance does a carbon atom have sp2 hybridization?

The Lewis structure of XeF₂ contains two bonding pairs of electrons and three non-bonding pairs of electrons (lone pairs) around the central xenon atom. What is the shape of the XeF₂ molecule?

Which substance can form intermolecular hydrogen bonds in the liquid state?

What is the type of hybridization of the silicon and oxygen atoms in silicon dioxide?