There are 29 electrons in the ion Cu2+.
Cu2+ is a divalent cation, meaning it has a 2+ charge and two fewer electrons than a neutral atom of copper. Therefore, there are 26 electrons in the ion Cu2+.
How Many Protons in Cu2+
Cu2+ is a divalent cation with a charge of +2. It is found in nature as the mineral cuprite and is a component of many minerals, including turquoise and malachite. The element copper has an atomic number of 29, which means that each atom of copper has 29 protons in its nucleus.
When Cu2+ ions are formed, they lose two electrons and therefore have 27 protons in their nuclei.

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What is the Number of Protons And Electrons in Cu2+?
The number of protons in Cu2+ is 29 and the number of electrons is 28.
How Many Electrons are Gained Or Lost in Cu2+?
Cu2+ is a transition metal ion that is found in the +2 oxidation state. This means that it has lost 2 electrons, giving it a net charge of +2.
How Many Protons Does a Cu2+ Ion Have?
A Cu2+ ion has 29 protons.
What is the Charge of Cu2+?
Cu2+ is a copper cation with a +2 charge. It is formed when copper loses two electrons to form a stable ion.
How to find Protons & Electrons for Cu+ and Cu2+ (Copper II and III ions)
Conclusion
In order to answer this question, one must first know what an electron is and what an ion is. An electron is a negatively charged subatomic particle that orbits the nucleus of an atom. An ion is a atom that has gained or lost one or more electrons, resulting in a net positive or negative charge.
So, how many electrons are in the ion Cu2+? This particular ion has 2 more protons than electrons, giving it a +2 charge. Therefore, there are 2 fewer electrons in the Cu2+ ion than there are in a neutralCu atom.
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