Answer:.25 M
Explanation: .4mol/1.6L = .25 M
The correct option is A.
The band theory of metal refers to the process by which metals conduct electricity, using the electrons in their outermost shells. Metal bands are formed, when the atomic orbitals of those metals that have similar energy level combine together to form molecular orbitals. The bands formed in the metals assist the electrons in the metals to move about, thus, the metals are capable of conducting electricity.
