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Abundance of Elements (easy)

I'll give you a Location or an object and you've to find the most abundant Elements that you can find there
Yellow Box is just here so your answers don't interfere with other groups
Not including various gas compositions (e.g. H2O, CO2)
Non-polar molecules (e.g. N2, O2) and Isotopes are counted as Elements
Words in brackets [e.g. "(Mass)"] say that the percentage is derived from that measurement
Quiz by Quotenbanane
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First submittedJune 30, 2018
Last updatedJune 30, 2018
Times taken18
3:30
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Keep scrolling down for answers and more stats ...
Earth's Atmosphere (Volume)
78,1%
Nitrogen
21%
Oxygen
0.90%
Argon
0.0018%
Neon
0.0005%
Helium
 
 
The Sun (Mass)
73%
Hydrogen
25%
Helium
0.80%
Oxygen
0.36%
Carbon
0.16%
Iron
 
 
Neodymium Magnet (Mass)
72%
Iron
27%
Neodymium
1%
Boron
Seawater (Mass)
85.80%
Oxygen
10.80%
Hydrogen
1.90%
Chlorine
1.08%
Sodium
0.12%
Magnesium
 
 
The Moon (Mass)
43%
Oxygen
20%
Silicon
19%
Magnesium
10%
Iron
3%
Calcium/Aluminium
 
 
Olympic Gold Medal (Mass)
99%
Silver
1%
Gold
Wood (Mass)
50%
Carbon
42%
Oxygen
6%
Hydrogen
1%
Nitrogen
>1%
Calcium/Potassium
 
 
Radioactive Elements in the Human Body (Mass)
99%
Potassium-40
0.50%
Uranium
0.10%
Thorium
0.00012%
Carbon-14
0.00000018%
Radium
 
 
Stainless Steel (Mass)
main ingredient
Iron
11-20%
Chromium
3-28%
Nickel
1-7%
Manganese
>1%
Carbon/Lead/Silicon
+1
level 70
Jun 30, 2018
chloride is not correct. the correct is chlorine. hydrogene is also mistaken. please change it to hydrogen.
+1
level 24
Jun 30, 2018
Thx for your corrections. Fixed.
+1
level 44
Jul 1, 2018
Nice quiz
+1
level 24
Jul 2, 2018
Thanks