Symbols
What is the atomic symbol for Helium?
He
What is a valence electron?
An electron that is in the highest occupied energy level of an atom.
These elements are used in fertilizers.
Nitrogen Family
What are the three classes of elements?
Metals, Nonmetals, Metalloids
H
How many valence electrons does the alkali metals have?
1
Because the elements are so reactive they are only found in nature as compounds.
Alkali metals
The elements in a group have similar ___________________ _________________.
electron configurations
What is the atomic symbol for Lead?
Pb
What is the highest number of valence electrons an element can have?
8
These elements are colorless, odorless, and unreactive.
Noble gases
What is periodic law?
Members of a group in the periodic table have similar chemical properties.
What is the atomic symbol for Gold?
Au
How many valence electrons does the Halogens have?
7
The elements are strong, lightweight, and malleable.
Boron Family
They have the same number of valence electrons.
What is the atomic symbol for Mercury?
Hg
How many valence electrons does the Nitrogen group have?
5
The metallic nature of these elements increases from top to bottom of this group.
Carbon Family
Name the representative groups.
Alkali metals, Alkaline Earth Metals, Boron Family, Carbon Family, Nitrogen Family, Oxygen Family Halogens, Noble gases