Answer: Option c)
Because the nucleus is made up of protons and neutrons, the mass of the nucleus has no effect on the valence shell. Protons, or nuclear charges, have an effect on the valence shell, but neutrons have no such effect.
“Anything that influences the valence electrons will affect the chemistry of the element”. Which of the factors given below is not affecting the valence shell? (a) Valence Principal quantum number (n) (b) Nuclear charge (Z) (c) Nuclear mass (d) Number of core electrons
“Anything that influences the valence electrons will affect the chemistry of the element”. Which of the factors given below is not affecting the valence shell? (a) Valence Principal quantum number (n) (b) Nuclear charge (Z) (c) Nuclear mass (d) Number of core electrons