trends of the periodic table...?

Question

can someone tell me how this one works..
if for example I was given 5 elements and I have to know what element has the greatest electron affinity, metallic property.. ect..

Answer 1

Electron affinity: The smaller and most number of outer electrons with out having a full set. Draw a diagonal line from Francium to Fluorine, with Fluorine having the highest electron affinity.
The diameter of the atom is the opposite of the electron affinity, the smallest at Helium, the largest at Francium, travelling down the diagonal. The metallic property is similar.

Answer 2

to answer your question
Generally, Electron affinity (electonegativity) increases as you move from left to right in the same period on the periodic table(except noble gases). It also increases from bottom to top within the same group (family).
As for metalic properties
Metals are on the left of the periodic table...Non metals on the right. Therefore, the further left, the more metalic.