Q:

# How many electrons does copper have?

A:

The atomic number for copper is 29, which means that it contains 29 electrons. As electrons are negatively charged, they need an equal number of positively charged protons to balance them out, which means that copper also has 29 protons within its nucleus.

## Keep Learning

Although copper has 29 total electrons, it only has one electron in its outer shell. This makes copper highly reactive, as this lone electron can easily move from copper to another atom. In addition to the 29 protons, an atom of copper also contains 35 neutrons within its nucleus. The combination of the protons and neutrons gives copper an atomic mass of 63.55.

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## Related Questions

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The Bohr model for silver explains the number of electrons, protons and neutrons that are present in the atom, and it diagrams the placement of the electrons within silver’s five energy levels. Silver’s Bohr model indicates that there are 47 protons and 61 neutrons in its nucleus, according to Pennsylvania County Schools. Its 47 electrons are broken up into five energy levels.

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To make an electron configuration list, first find the atomic number, then count up the number of electrons and list them in the appropriate energy level and orbital. The information to write an electron configuration is typically available by locating the element on the periodic table. For example, the electron configuration of nitrogen is 1s2 2s2 2p3.

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An atom of chromium with no charge has a total of 24 electrons, as indicated by the element's atomic number on the periodic table of elements. The atom also holds 24 protons and 28 neutrons.