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Atom and Purity
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how many percent sodium chloride in seawater ?
68%
how many percent salts is seawater ?
3.5%
the rarest diamond is .... colour
green
which element mixed with carbon in diamond makes them blue ?
Boron
what is mean translucent ?
light through
pure silver has purity ... %
92.5%
18 carat of gold has purity of ... ?
75%
What are atoms ?
Smallest molecules
How many carrat of pure gold ?
24
Elements that only consist of same atoms we called as ?
Pure elements
Who discovered proton ?
Ernest Rutherford
Who discovered neutron ?
James Chandwick
What is the center of atom ?
Nucleus
Who discovered electron ?
J.J Thomson