Since the d sublevel has 5 "spaces" the answer would be. There can be a maximum of 5 unpaired electrons in a d subshell until a pair is formed.
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.
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An antimony (Sb) atom has five valence electrons in its outermost shell, which is the 5th shell with an electron configuration of [Kr] 4d10 5s2 5p3. In the 5p subshell, there are three electrons, and they occupy separate orbitals due to Hund's rule, resulting in three unpaired electrons. Therefore, an Sb atom has three unpaired electrons.
The third shell of an atom can hold a maximum of 18 electrons. This shell consists of three subshells - s, p, and d - with each subshell being able to accommodate a certain number of electrons. The s subshell can hold up to 2 electrons, the p subshell can hold up to 6 electrons, and the d subshell can hold up to 10 electrons, totaling 18 electrons in the third shell.
The maximum number of unpaired electrons in the s subshell is 2, in the p subshell is 6, in the d subshell is 10, and in the f subshell is 14. This is based on the maximum number of electrons that can occupy each subshell according to the Aufbau principle and the Pauli exclusion principle.
Since the d sublevel has 5 "spaces" the answer would be. There can be a maximum of 5 unpaired electrons in a d subshell until a pair is formed.
A p subshell can contain a maximum of 6 electrons.
The maximum number of electrons in a single d subshell is 10.
The maximum number of electrons that can be present in each shell or subshell is determined by the formula 2n2, where n is the principal quantum number of the shell or subshell.
Hund's Rule
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Paired electrons in one of the subshell become unpaired and are promoted to higher subshell to create more than one valencies.
6th energy level can hold 72 electrons. (has s,p,d,f,g, and h subshells)
An antimony (Sb) atom has five valence electrons in its outermost shell, which is the 5th shell with an electron configuration of [Kr] 4d10 5s2 5p3. In the 5p subshell, there are three electrons, and they occupy separate orbitals due to Hund's rule, resulting in three unpaired electrons. Therefore, an Sb atom has three unpaired electrons.
The second electron shell (n=2) can hold a maximum of 8 electrons. This shell consists of 2 subshells, the s subshell with 2 electrons and the p subshell with 6 electrons, giving a total of 8 electrons.
The third shell of an atom can hold a maximum of 18 electrons. This shell consists of three subshells - s, p, and d - with each subshell being able to accommodate a certain number of electrons. The s subshell can hold up to 2 electrons, the p subshell can hold up to 6 electrons, and the d subshell can hold up to 10 electrons, totaling 18 electrons in the third shell.