What is the Atomic Number of Copper?
Answer – The atomic number of copper (Cu) is 29.
Explanation:
The atomic number of an element is the number of protons contained in the nucleus of one of its atoms. It determines the position that that element occupies on the periodic table, which is arranged in the order of increasing atomic number.
In ground or neutral state, the number of protons in an atom is equal to the number of its electrons. Thus, the atomic number, also represented by the symbol Z, also indicates the charge that the atom carries.
The element copper (Cu) has the atomic number 29. It has 29 protons and 29 electrons (in its ground state).
Accordingly, it falls in the fourth period and the eleventh group of the periodic table. Its position determines that copper is a metal.
