I know CL is chlorine and NA is sodium.
I think the correct answer from the choices listed above is the third option. <span>In the redox reaction given, the element that was reduced was Fe or iron. It's charge reduced from +3 to zero, a neutral charge. Hope this answers the question. Have a nice day.</span>
It would be velocity over frequency look up equation
If by Period you mean Column, they share the same amount of electrons in their outer shell.
