Use of halogen ok1294998147

Use of halogen ok1294998147

• 1.
  The Halogens
• 2.
  The Halogens Thehalogens are a group of non- metals in the periodic table They all have seven electrons in their outer shell this makes them all really reactive; they only have to gain one more electron to fill their outer shell. Unlike Group One the elements get less reactive as you go down the group
• 3.
  Fluorine (F)2,7 Name: Fluorine Symbol: F Atomic Number: 9 Atomic Mass: 18.998404 amu Melting Point: -219.62 °C Boiling Point: -188.14 °C Number of Protons/Electrons: 9 Number of Neutrons: 10 Colour: Greenish
• 4.
  Chlorine (Cl) 2,8,7Name: Chlorine Symbol: Cl Atomic Number: 17 Atomic Mass: 35.4527 amu Melting Point: -100.98 °C Boiling Point: -34.6 °C Number of Protons/Electrons: 17 Number of Neutrons: 18 Colour: green
• 5.
  Bromine (Br) 2,8,18,7Name: Bromine Symbol: Br Atomic Number: 35 Atomic Mass: 79.904 amu Melting Point: -7.2 °C Boiling Point: 58.78 °C Number of Protons/Electrons: 35 Number of Neutrons: 45 Colour: Red
• 6.
  Iodine (I) 2,8,18,18,7 Name: Iodine Symbol: I Atomic Number: 53 Atomic Mass: 126.90447 amu Melting Point: 113.5 °C Boiling Point: 184.0 °C Number of Protons/Electrons: 53 Number of Neutrons: 74 Colour: blackish
• 7.
  Astatine (At) 2,8,18,32,18,7Name: Astatine Symbol: At Atomic Number: 85 Atomic Mass: (210.0) amu Melting Point: 302.0 °C Boiling Point: 337.0 °C Number of Protons/Electrons: 85 Number of Neutrons: 125 Colour: Unknown
• 8.
  Uses of FluorineThe main use of fluorine is toothpaste even though it isn’t as fluorine itself but instead as fluoride , a compound of fluorine.
• 9.
  Uses of ChlorineChlorine is used mostly to kill bacteria or as a bleach. Chlorine bleaches a piece of universal indicator paper white.
• 10.
  Uses of BromineBromine is one of the main ingredients in camera films (as silver bromide).
• 11.
  Uses of IodineWhen dissolved in water, iodine can be used as a strong antiseptic or as a test for starch.