Why ionisation enthalpy trend is irregular in transition elements

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

How does a noncompetitive inhibitor reduce an enzyme’s activity?

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2