Unlike phantom power, bias does not require a balanced circuit. Bias supplies power to a Junction Field Effect Transistor (JFET) connected to the output of an electret condenser mic element. The JFET acts as an impedance converter that is a necessity in any microphone design that uses a condenser element.
Iodine atoms have 53 electrons and the shell structure is 2.8.18.18.7. The ground state electron configuration of ground state gaseous neutral iodine is [Kr].4d10.5s2.5p5 and the term symbol is 2P3/2.
Confidence votes 549. Iodine (symbol I) has atomic number 53, which means that it has 53 protons in the nucleus (by definition). Since an atom is neutral overall, and the charge on an electron is equal and opposite to that of a proton, the atom has 53 electrons.