What do you mean by Zeff?
Effective nuclear charge is the magnitude of positive charge in an atom from the pull on the valence electrons towards the positively charged nucleus. An increase in atomic number associated with a decrease in atomic radius will result in a higher effective nuclear charge.
Effective nuclear charge is the magnitude of positive charge in an atom from the pull on the valence electrons towards the positively charged nucleus. An increase in atomic number associated with a decrease in atomic radius will result in a higher effective nuclear charge.
