Is it possible for chlorine to have an expanded valence shell?
chlorine has a empty 3d sub shell, which may allow it expand its valence shell. other example of chlorine expanding its valence shell is ClF3(10 e). The simple rule you can follow while considering valence shell expansion is:– C, N, O, and F almost always obey the octet rule. – B, Be, and Al are often sub-octet – Second row (Period 2) elements never exceed the octet rule – Third Row (Period 3) elements (of which Cl is a part of)and beyond can usevalence shell expansion to exceed the octet rule.
