Describe a sigma bond. a) overlap of two f orbitalsb) end to end overlap of p orbitalsc) s orbital overlapping with the side of a p orbitald) side by side overlap of p orbitalse) p orbital overlapping with a d orbital

B - End to end overlap of p overlap

Explanation:

Sigma bonds (σ bonds) are the strongest type of covalent chemical bondSigma bonds are formed by end-to-end overlapping. Sigma bonds can occur between any kind of atomic orbitals;The combination of overlapping orbitals can be s-s, s-pz or pz-pz.                              

well in order to answer this question you have to provide more information < 3

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).