The ground state electron configuration for sodium is:

a. 1s2 2s2 2p8.
b. 1s2 2s2 2p6 3s2 3p6 4s1.
c. 1s2 2s2 2p6 3s2 3p4.
d. 1s2 2s2 2p6 3s1.

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

What material does not melt at any temperature

Match the mixture with the substance// i really need on this guys (it’s a pic btw)