As we move across the periodic table of elements, certain trends are evident. The placement of individual elements in the periodic table allows us to predict many characteristics of elements such as state of matter at room temperature, reactivity, and
valence electrons just to name a few. As one moves from left to right across the periodic table, what trends are evident?
A)
Atomic radius increases moving left to right.
B)
Nonmetallic character increases moving left to right
Electron affinity increases across the periodic table.
D)
Elements change from solids to liquids and then gases.
E)
Most reactive elements on left and least reactive on right.