Chlorine gains an electron less easily than Fluorine. • Because Cl has a greater distance between its nucleus and outermost electron • And because Cl has increased shielding by its internal electrons • So, Cl has weaker electrostatic forces of attraction Thus, Chlorine is less reactive than Fluorine.
(I'd assume the bullet points are what you'd get the marks for.)
Chlorine gains an electron less easily than Fluorine. • Because Cl has a greater distance between its nucleus and outermost electron • And because Cl has increased shielding by its internal electrons • So, Cl has weaker electrostatic forces of attraction Thus, Chlorine is less reactive than Fluorine.
(I'd assume the bullet points are what you'd get the marks for.)