Consider an atom of 63Cu.
a. How many protons, neutrons, and electrons does this atom contain?
b. What is the symbol of the ion generated by removing two electrons from 63Cu?
C. What is the symbol for the isotope generated by adding two neutrons to 63Cu?
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a. The atomic number of an element represents the number of protons in its nucleus. Copper (Cu) has an atomic number of 29, so 63Cu contains 29 protons.
To determine the number of neutrons, we subtract the atomic number from the mass number (number of protons + number of neutrons). Since the mass number is given as 63, the number of neutrons in 63Cu is 63 - 29 = 34.
Since atoms are electrically neutral, the number of electrons is also equal to the number of protons, which is 29.
b. When two electrons are removed from 63Cu, it forms an ion with a charge of +2. The symbol for this ion would be Cu2+.
c. To generate an isotope of 63Cu by adding two neutrons, we would have a new mass number. The new isotope would have a mass number of 63 + 2 = 65. The symbol for this isotope would be 65Cu.
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