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Electronic configuration refers to the distribution of electrons in different energy levels or orbitals around the atom's nucleus. Here are some examples of electronic configurations of elements:
* Helium (He): 1s2
* Lithium (Li): 1s2 2s1
* Nitrogen (N): 1s2 2s2 2p3
* Oxygen (O): 1s2 2s2 2p4
* Sodium (Na): 1s2 2s2 2p6 3s1
* Chlorine (Cl): 1s2 2s2 2p6 3s2 3p5
* Argon (Ar): 1s2 2s2 2p6 3s2 3p6
The electronic configuration of an element dictates its chemical properties and reactivity.