THE BORON FAMILY-Boron(5)

-Aluminum(13)-Gallium(31)-Indium(49)

-Thallium(81)

Boron Family

3 Outer Valence Electrons Do not occur elementally in nature Are scarce in nature All metallic besides Boron(solid

metalloid) All soft and have a low melting point

except for Boron Chemically reactive at moderate

temperatures

Element no. 5Atomic weight- 10.811Color- Black/BrownishUsed for: fiberglass insulation, fertilization, road or

safety flares, wood preservatives, shields radiation, used as an insecticide

Boron

Aluminum

Atomic number 13 Metallic Uses: Aircraft, machinery, engine

blocks, engine components, tools, etc.

GALLIUM

Atomic Number 31 Color- Silvery White Classification- Metallic Used as a key component for LED

Lights and lasers

Indium

Atomic Number 49 Color- Silver Lustrous Gray Classification- Metallic Gives off a high pitched scream when

bent Useful for making low-melting alloys Produced mainly by Canada

Thallium

Atomic Number- 81 Color- Silvery White Classification- Metallic Resembles lead when left in open air Very soft and malleable, can be cut with

a knife Toxic and can cause cancer