Atomic Structure Unit

Which group of the periodic table contains elements that are stable and nonreactive?

• Halogens

• Alkali Metals

• Noble Gases

• Alkaline Earth Metals

Which element is the most reactive metal?

• Francium

• Boron

• Magnesium

• Iodine

Rubidium has ___ valance electrons.

___ has 2 valence electrons and 3 electron orbitals.

• Aluminum

• Argon

• Magnesium

• Beryllium

All are metalloids with the exception of

• Silicon

• Aluminum

• Boron

• Arsenic

_____ do not conduct an electrical current or transfer heat very well.

• Metals

• Nonmetals

• Metalloids

• Transitional Metals

Elements in Group ___ have 8 valance electrons and are, therefore, stable or nonreactive.

Group ___ has 7 valence electrons and are the most reactive nonmetals.

• 1

• 2

• 16

• 17

The element with the atomic number 30 is a metal, metalloid, or nonmetal.

Group ___ has 3 valence electrons.

• 18

• 15

• 3

• 13