CHLORINE (Cl)

PERIODIC TABLE

• Protons - 17
• Electrons - 17
• Neutrons - 18
• Atomic Mass - 35.453amu
• Atomic number - 17

PROPERTIES

• Non-metal
• Yellowish - Greenish
• Melting point -101.5 degrees Celsius
• Boiling point -34.04 degrees Celsius
• Can be found as a gas in room temperature.

WHO DISCOVERED

• Chlorine was first founded in 1774 by Carl Wilhelm Scheele.
• He didn't know it was an element. Thought it contained oxygen.
• Sir Humphry Davy confirmed it was an element in 1811.
• Called it Chlorine from the Greek word 'chloros'.

WHERE IS IT FOUND?

• Chlorine was first used as a gas in WWI.
• Used for producing safe drinking water.
• Can be found on tree frogs as a pain killer.
• Most likely found in swimming pools.
• Most is found in cleaning products such as Clorox.

HOW IS IT USED?

• Chlorine can be used to as cleaning products.
• Can be used as medicine.
• Used to make safe drinking water.
• Used to kill bacteria in swimming pools.
• Used as a toxic gas in war.

EXTRAS

• Founded in group 17 and period 3.
• Electron configuration - 1s² 2s² p⁶ 3s² p⁵
• Has 7 valence electrons.
• Poisonous unless combined with another element.
• Found in a combined state in nature.