They both have seven electrons in their outer shell.
Explanation:
when the catalyst is added the reaction with the lower activation energy occur
<span>Mass number is the number of protons and neutrons in an atom, and it tells us about the mass of the atom in amu, or atomic mass units. Atomic mass is the average mass of all the isotopes of a certain type.</span>
<span>Mass number found on the periodic table</span>
Sufficient energy upon collision of particles and correct orientation of particles
Bonding electrons are involved in chemical bonding these electrons have their valnce shell incomplete
