Answer to Question #261405 in Inorganic Chemistry for River

Question

The reduction potential for Na (-2.71 V) is lower than that of the elements above it (Li, -3.04 V) and below it (K, -2.93 V). Explain the lack of a clear trend in the redox properties of the first 3 alkali metals. 

Answer 1

The reactivity of group 1 elements increases as you go down the group because: the atoms become larger. the outer electron becomes further from the nucleus. the force of attraction between the nucleus and the outer electron decreases.