+4 and +6 I think not sure tho
The representative elements are elements where the s and p orbitals are filling. The transition elements are elements where the d orbitals (groups 3–11 on the periodic table) are filling, and the inner transition metals are the elements where the f orbitals are filling.
Tin is classified as a metal in family 14.
+molecule size +steepness of the concentration gradient +temperature + steepness of the electric gradient +steepness
