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a listing of the energy levels and sublevels of an atom with the number of electrons in those levels/sublevels.

Ex: 1s22s22p4 (what looks like exponents in math are the number of electrons)

1s2 indicates the 1st energy level has an 's' sublevel with 2 electrons

2s2 indicates the 2nd energy level has an 's' sublevel with 2 electrons

2p4 indicates the 2nd energy level has an 'p' sublevel with 4 electrons

total of 8 electrons in the atom

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11y ago
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11y ago

An atom may have one or more orbitS.These orbits can accumulate a definite number of electrons.FOR INSTANCE,first orbit can accumulate maximum of two electrons,second orbit can accumulate eight electrons and so on.These orbits furthur consist of subshells or orbitals.This distribution of electrons among different orbits is known as ELECTRON CONFIGURATION.

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Electron configuration for an atom is the distribution of electrons on atomic orbitals.

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The arrangement of electrons in different shells (or energy levels) is known as electronic configuration.

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Q: What is electron configuration of an atom?
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