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The abbreviated electron configuration of sodium is [Ne]3s1.
The abbreviated electron configuration of lithium is [He] 2s1.
The electron configuration of boron is [He]2s2.2p1.
The electron configuration of nobelium is [Rn]5f14.7s2.
The abbreviated electron configuration for argon is [Ne] 3s^2 3p^6. The [Ne] represents the electron configuration of the noble gas neon, which has the same electron configuration as the inner electrons of argon.
[Kr]
The abbreviated electron configuration of oxygen is [He] 2s^2 2p^4.
The abbreviated electron configuration for selenium is [Ar] 3d10 4s2 4p4.
The abbreviated electron configuration of cobalt is [Ar] 3d7 4s2.
An abbreviated electron configuration is a shortened way of representing the distribution of electrons in an atom using noble gas notation. It involves using the symbol of the nearest noble gas to represent the core electrons, followed by the valence electrons in the outermost energy level. For example, the abbreviated electron configuration of sodium (Na) would be [Ne] 3s¹.
The electron configuration of americium is [Rn]5f7.7s2.
The abbreviated electron configuration for Francium (Fr) is [Rn] 7s1.