Conductors allow electrons to move freely from atom to atom, and molecule to molecule, whereas insulators don'tDoes that mean that conductors have a weaker hold on electrons than insulators? If so, how come on the electrostatic series, aluminum has a stronger hold on electrons than insulators such as silk and wool?!
Insulators won't completely block the movement of electronsThey actually resist the more than insulatorsWhether one might be a conductor or insulator, those which have more amount of space in their electron orbit(outer shell) can hold more electrons than the otherMaterials with weakly bound electrons tend to lose them, while materials with sparsely filled outer shells tend to gain themThis is known as the triboelectric effectConductivity deals with mobility of electronsAu(Gold) and Platinum(Pt) is in the top of the seriesAl is inbetween the series.
