An atom of the element chromium has an atomic number of 24 and a mass number of 52. How many electrons are in an uncharged atom of chromium?

The atomic number of chromium is 24, so a chromium atom has 24 protons. In an uncharged atom, the number of electrons equals the number of protons. Therefore, an uncharged chromium atom has 24 electrons; the mass number of 52 does not change this count.

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