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OldSpice OldSpice
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9 years ago
In 1996 a team of German physicists created an atom of Element 112. If the atom had a mass number of 277, and a neutron was released from the collision of a projectile and a Pb-208 target, what was the projectile?
A) Cu-69
B) Cu-70
C) Zn-69
D) Zn-70
E) none of the above
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ElectricElectric
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9 years ago
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.silent.boss

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OldSpice Author
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#2
9 years ago
Perfect!

..Thank you so much for your support
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#3
9 years ago
My pleasure
.silent.boss
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