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An element's atomic number is 77. How many protons would an atom of this element have? protons

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DuckArmy
Your answer is 55 protons.
blufreak
the number of protons would be 77. i know this sounds wrong but it may be correct. i looked it up.  the atomic mass would be 192.217 atomic mass units.  the name of this is Iridium. the number of neutrons would be 115. 
hope this helps u.

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