HALOGENS

FLOURINE (F)

• The atomic number is 9 and the atomic mass is 19.
• Non-Metal
• It's not conductive but, Fluorine is flamable.
• At room temp, it is a gas.
• Fluorine is a pale yellow gas.
• Fluorine also reacts violently with virtually everything, including glass.
• It also reacts violently with water and forms hydrogen fluoride.
• Fluorine freezing point is at -363.3.

CHLORINE (CL)

• The atomic number is 17, and the atomic mass is 35.45
• Non-Metal
• At room temperature it is a gas.
• Chlorine is a pale yellow gas. This gas also killed soldiers in WW1
• When chlorine reacts with water it creates CL2
• Chlorine is not flammable but it can react explosively.

BROMINE (BR)

• The atomic number is 35 and the atomic mass is 79.90
• Bromine is a non-metal.
• It is not conductive.
• Bromine is liquid at room temperature. It also evaporates very quickly into a purple-brown choking gas.
• Does not react with water.
• It is not flammable.

IODINE (I)

• The atomic number is 53 and the atomic mass is 126.90
• Non-Metal.
• Iodine is a solid at room temperature.
• Iodine sublimates into a beautiful violet vapor when heated.
• Does not react with water.
• It is not flammable, however, it is a strong oxidizing agent.

ASTATINE (AT)

• The atomic number is 85 and the atomic mass is (210.
• Non-Metal.
• Is not conductive.
• Astatine is a solid at room tempeture.
• It occurs in very small quantities for it is in the chains of natural decay chains of uranium and thorium minerals.
• Astatine also forms hydrogen astatide by reacting with hydrogen. Then forms hydroastatic acid when dissolved in water.
• It is not flammable.