Periodic Table Review

A vertical column in the periodic table is called a(n) _

The periodic table is arranged according to _

List its symbol, if it is metal/nonmetal/metalloid, its # of shells, its # of valence electrons, and how reactive it is:

How can you tell how many shells an element has?

In, metal, 5 shells, 3 valence electrons, low reactivity

List its symbol, if it is metal/nonmetal/metalloid, its # of shells, its # of valence electrons, and how reactive it is:

How can you tell how many valence electrons an element has?

Ar, nonmetal, 3 shells, 8 valence electrons, highly reactive

A horizontal row in the periodic table is called a(n) _

Na, metal, 3 shells, 1 valence electron, low reactivity

Br, nonmetal, 4 shells, 7 valence electrons, highly reactive

The identity of an atom is determined by its number of _

Elements in a group/family have similar properties.

The elements in group _ are the most reactive metals

List its symbol, if it is metal/nonmetal/metalloid, its # of shells, its # of valence electrons, and how reactive it is:

The elements in group _ are the most reactive nonmetals

The elements in group _ are very unreactive

Is this correct?