The symbols of the nonmetals are as follows:
Hydrogen: H
Helium: He
Carbon: C
Nitrogen: N
Oxygen: O
Fluorine: F
Neon: Ne
Phosphorus: P
Sulfur: S
Chlorine: Cl
Argon: Ar
Selenium: Se
Bromine: Br
Xenon: Xe
Iodine: I
Krypton: Kr
Astatine: At
Radon: Rn
all are non metals
Their hardness will be less than that of metals but more than that of non metals. Hence the name, semi metals or metalloids.
bromine
They have properties of metals and non-metals, and also have properties that are around '1/2' of both. An example is silicon, which has a high melting point and is solid (metallic properties). However it is very brittle and it forms an acidic oxide (non-metal). It is a semi-conductor.
metals on left, non-metals on right, some others in middle.
Arsenic (symbol As) is a metalloid. It exhibits properties of both metals and non metals.
boron(metalloid)
titties
plastic
Non metals
The symbols of the metals come from their Latin names. For example, iron's symbol Fe comes from its Latin name "ferrum". Similarly, gold's symbol Au comes from its Latin name "aurum".
Non metals
all are non metals
non metals
Their hardness will be less than that of metals but more than that of non metals. Hence the name, semi metals or metalloids.
any metal that is not iron
bromine