Answer :
Ir = [Xe] 4f14 5d7 6s2
Rn = [Xe] 4f14 5d10 6s2 6p6
Fe = [Ar] 3d6 4s2
Pa = [Rn] 5f2 6d1 7s2
Y = [Kr] 4d1 5s2
Re = [Xe] 4f14 5d5 6s2
So only Rhenium (Re) has an electronic configuration where the d orbital has 5 electrons in it.
Rn = [Xe] 4f14 5d10 6s2 6p6
Fe = [Ar] 3d6 4s2
Pa = [Rn] 5f2 6d1 7s2
Y = [Kr] 4d1 5s2
Re = [Xe] 4f14 5d5 6s2
So only Rhenium (Re) has an electronic configuration where the d orbital has 5 electrons in it.
Answer: The atoms whose ions have electronic configuration as [tex]nd^5[/tex] are Iridium (Ir), Iron (Fe) and Rhenium (Re)
Explanation:
An ion is formed when a neutral atom looses or gains electrons.
- When an atom looses electrons, it results in the formation of positive ion known as cation.
- When an atom gains electrons, it results in the formation of negative ion known as anion.
For the given elements:
Iridium: The electronic configuration of this element is [tex][Xe]6s^25d^7[/tex]. The stable oxidation state of iridium is +4.
The electronic configuration of [tex]Ir^{4+}[/tex] is [tex][Xe]5d^5[/tex]
Radon: The electronic configuration of this element is [tex][Xe]6s^25d^{10}6p^6[/tex]. This is a stable element.
Iron: The electronic configuration of this element is [tex][Ar]4s^23d^6[/tex]. The stable oxidation state of iron is +3.
The electronic configuration of [tex]Fe^{3+}[/tex] is [tex][Ar]3d^5[/tex]
Protactinium: The electronic configuration of this element is [tex][Rn]7s^26d^15f^2[/tex]. The stable oxidation state of protactinium is +3.
The electronic configuration of [tex]Pa^{3+}[/tex] is [tex][Rn]7s^2[/tex]
Ytterium: The electronic configuration of this element is [tex][Kr]5s^24d^1[/tex]. The stable oxidation state of ytterium is +3.
The electronic configuration of [tex]Y^{3+}[/tex] is [tex][Ar]4s^23d^{10}4p^6[/tex]
Rhenium: The electronic configuration of this element is [tex][Xe]6s^25d^5[/tex]. The stable oxidation state of rhenium is +2.
The electronic configuration of [tex]Re^{2+}[/tex] is [tex][Xe]5d^5[/tex]
Hence, the atoms whose ions have electronic configuration as [tex]nd^5[/tex] are Iridium (Ir), Iron (Fe) and Rhenium (Re)