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The Halogens
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Slide 1

The Halogens

The Halogens

By Tom

AND

Chris

Slide 2

The Halogens

The Halogens

The halogens 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

Slide 3

Fluorine (F) 2,7

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

Slide 4

Chlorine (Cl) 2,8,7

Chlorine (Cl) 2,8,7

Name: 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

Slide 5

Bromine (Br) 2,8,18,7

Bromine (Br) 2,8,18,7

Name: 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

Slide 6

Iodine (I) 2,8,18,18,7

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

Slide 7

Astatine (At) 2,8,18,32,18,7

Astatine (At) 2,8,18,32,18,7

Name: 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

Slide 8

Uses of Fluorine

Uses of Fluorine

The main use of fluorine is toothpaste even though it isnt as fluorine itself but instead as fluoride, a compound of fluorine.

Slide 9

Uses of Chlorine

Uses of Chlorine

Chlorine is used mostly to kill bacteria or as a bleach. Chlorine bleaches a piece of universal indicator paper white.

Slide 10

Uses of Bromine

Uses of Bromine

Bromine is one of the main ingredients in camera films (as silver bromide).

Slide 11

Uses of Iodine

Uses of Iodine

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