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Posted by on Tuesday, August 24, 2010 at 12:58pm.

How to solve this:

One isotope of a metallic element has mass # of 65 and 35 neutrons in nucleus. The cation derived from the isotope has 28 electrons. Write the symbol for this cation.

Would the symbol be Cu?
because Atomic # = protons = electrons
and Mass # = neutrons + protons

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