block_c_transition

By this definition, [|zinc], [|cadmium], and [|mercury] are excluded from the transition metals, as they have a //d//10 configuration.

-Brian- Let's make some comparisons in a family and in a period. In a family--like from hydrogen to lithium to sodium on down--the atomic size increases. As you go down a group, the size increases. As you go across a period, as from lithium to neon, notice that the size decreases. You need to remember (or memorize) those trends.

-Brian-