A half-cell contains `"____"` of an element .

Options

A. the oxidized from
B. the reduced form
C. the redox form
D. the oxidized and reduced forms

Answer

D

Explanation

A half-cell contains the oxidized and reduced forms of an element, or other more complex species, in contact with one another. A common kind fo half-cell consists of a piece of metal (the electrode) immersed in a solution of its ions. Consider two such half-cells in separate beal as. The electrodes are connected by a metal wire .(A) voltmeter can be inderted into the circuit to measure the potential difference between the two electrodes, or an ammeter can be inserted to measure the current flow. The circuit between the two solutions is completed by a salt bridge.