1s2 2s2 2p6 3s2 3p6 4s2 3d1
The electron configuration of scandium (Sc) is Ar 3d1 4s2.
The electron configuration of scandium is: [Ar]3d1.4s2.
Argon.
Scandium (symbol, Sc) has 21 electrons. Its noble gas configuration is [Ar] 3d1 4s2
Scandium (Sc) has an atomic number of 21, which means it has 21 electrons. Its electron configuration is [Ar] 3d¹ 4s². Therefore, Sc has one 3d electron.
Noble gas notation for scandium (Sc) is [Ar] 3d1 4s2, where [Ar] represents the electron configuration of argon (1s2 2s2 2p6 3s2 3p6).
Among the elements Scandium (Sc), Chlorine (Cl), Barium (Ba), and Selenium (Se), only Scandium (Sc) and Chlorine (Cl) are paramagnetic. Scandium has unpaired electrons in its electron configuration, making it paramagnetic. Chlorine, in its gaseous form, also has unpaired electrons, contributing to its paramagnetic nature. Barium (Ba) and Selenium (Se) are not paramagnetic; Ba is a noble gas with all paired electrons, while Se has a stable electron configuration with no unpaired electrons.
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There are three unpaired electrons in the ground state of a scandium atom (Sc). This is because scandium has an atomic number of 21, with an electron configuration of [Ar] 3d^1 4s^2, where the 3d orbital has one unpaired electron.
Scandium (Sc) has an atomic number of 21, which means it has 21 electrons. Its electron configuration is [Ar] 3d¹ 4s². In this configuration, there is one unpaired electron in the 3d subshell, as the 4s subshell is fully paired. Therefore, scandium has one unpaired electron.