# The most variant groups of periodic table

Is it okay to call group 11 (formerly 1B) a "group"? I meant that according to my knowledge "A group is a horizontal column consisting of elements with similar valencies and a continuous gradation in physical and chemical properties" but there is no gradual trend or we don't obtain similar reactions for same circumstances. Members do not show similar oxidation states and do not form analogous compounds. Electronegativity values and other bonding characteristics also deviate badly from one another. Are they in a group just because their atomic numbers allot their positions in same vertical column? Shouldn't 1B and other d-block "groups" (which show such variant properties) treated as "ungrouped region" or something like that?

• Placing in groups is directly related only to electronic configuration, "results may vary". – Mithoron Jun 11 '16 at 22:37
• I assume you meant "vertical column"? – hBy2Py Jun 11 '16 at 22:39

2) Tend to prefer combining with "soft base" nonmetals: Cu and Ag found as sulfides, gold is oxidized by $\ce{HNO_3}$ when a chloride source is added.