Copper has an atomic number of 29 and a mass number of 64. What would result if an uncharged copper atom lost 2 electrons?
a. The atom would have a double negative charge and be an ion.
b. The atomic number would be reduced to 27 , the mass number would remain 65 and the atom would be an anion with a +2 charge.
c. The atomic number would remain 29, the mass number woul be reduced to 62 and the atom would be an anion.
d. The atomic number would remain 29, the mass number would remain 64 and the atom would be a cation with a +2 charge.
Ans: d. The atomic number would remain 29, the mass number would remain 64 and the atom would be a cation with a +2 charge.
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