Noble Gases: Group 18

Caylon, Luis, Tyon

Helium

a) Name of element :Helium

b) Symbol of element:HE

c) Atomic Number of element:2

d) Atomic Mass of element:4.003amu

e) Picture of element's atomic structure:

f) How many valence electrons does this element have?: 2

g) What are the uses for this element :Balloons,deep sea diving

h) Who discovered this element: Sir William Ramsay

Neon

a) Name of element: Neon

b) Symbol of element Ne

c) Atomic Number of element 10

d) Atomic Mass of element 20.180amu

e) Picture of element's atomic structure

f) How many valence electrons does this element have? 8

g) What are the uses for this element? lighting

h) Who discovered this element? Sir William Ramsay

Argon

a) Name of element: Argon

b) Symbol of element Ar

c) Atomic Number of element 18

d) Atomic Mass of element 39.948amu

e) Picture of element's atomic structure

f) How many valence electrons does this element have? 8

g) What are the uses for this element? lighting

h) Who discovered this element? Sir William Ramsay

Radon

a) Name of element Radon

b) Symbol of element Rn

c) Atomic Number of element 86

d) Atomic Mass of element 222

e) Picture of element's atomic structure

f) How many valence electrons does this element have? 8

g) What are the uses for this element? treatment of cancer

h) Who discovered this element? Fredrich Ernst Dorn

Xenon

a) Name of element: Xenon

b) Symbol of element:Xe

c) Atomic Number of element:54

d) Atomic Mass of element:131.29amu

e) Picture of element's atomic structure:

f) How many valence electrons does this element have: 8

g) What are the uses for this element: powerful lamps,Bubble chambers

h) Who discovered this element: Sir William Ramsay

Krypton

a) Name of element Krypton

b) Symbol of element Kr

c) Atomic Number of element 36

d) Atomic Mass of element 83.8amu

e) Picture of element's atomic structure

f) How many valence electrons does this element have? 8

g) What are the uses for this element? lighting

h) Who discovered this element? Sir William Ramsay

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what they have in common

all have similar properties under standard conditions: they are all odorless, colorless, monatomic gases with very low chemical reactivity.

and they all have 8 valance electrons excepted helium that has 2