Which type of reaction happens when a base is mixed with an acid

An atom's configuration based on its number of electrons ends at 3p4. another atom has seven more electrons. starting at 3p, what is the remaining configuration? 3p63d34s2 3p43d54s2 3p64s23d3 3p44s23d

What volume would 2.25 moles of ne has occupy at stp?

What conclusion can you draw from this experiment about the components of the black ink?