What is the zeff of Ga?

The effective nuclear charge (Z_eff) of gallium (Ga) is approximately 3.6. This value reflects the net positive charge experienced by an electron in the outermost shell, taking into account the shielding effects of the inner electrons. In gallium, with its atomic number of 31, the protons in the nucleus exert a strong pull on the outer electrons, but the inner electrons partially shield this pull.