# data[].attributes.body
Good electrical conductors and heat conductors.

Malleable - can be beaten into thin sheets.

Ductile - can be stretched into wire.

Possess metallic luster.

# data[].attributes.body
Poor thermal conductors.

Poor electrical conductors.

Brittle solids - not malleable or ductile.

Little or no metallic luster.

# data[].attributes.body
Palladium is a soft silver-white metal that resembles platinum. It is the least dense and has the lowest melting point of the platinum group metals. It is soft and ductile when annealed and is greatly increased in strength and hardness when cold-worked.

# data[].attributes.body
Metalloids are all solid at room temperature. Some metalloids, such as silicon and germanium, can act as electrical conductors under the right conditions, thus they are called semi-conductors. Silicon for exampleappears lustrous, but is not malleable or ductile (it is brittle - a characteristic of some nonmetals).

# data[].attributes.body
Carbon can exist with several different 3 dimensional structures in which its atoms are arranged differently (allotropes). Three common crystalline allotropes are graphite, diamond, and (usually) fullerenes. Graphene has a 2D crystal structure.(Fullerenes can sometimes exist in amorphous form.)

# data[].attributes.body
Silicon is a hard, relatively inert metalloid and in crystalline form is very brittle with a marked metallic luster. Silicon occurs mainly in nature as the oxide and as silicates. The solid form of silicon does not react with oxygen, water and most acids.