객관식
How many d electrons are present in the tungsten (W) atom in the WO₄²⁻ ion?
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24. Transition Metals and Coordination Compounds
Electron Configurations of Transition Metals
객관식
Which of the following best describes what is unique about the electron configurations of transition metals?
A
They have completely filled p orbitals in their ground state.
B
Their electron configurations never deviate from the predicted order of filling.
C
They often have partially filled d orbitals, even after losing electrons to form ions.
D
Their valence electrons are always found only in s orbitals.
검증된 단계별 안내1
Understand that transition metals are elements found in the d-block of the periodic table, which means their valence electrons include electrons in the d orbitals.
Recall that the electron configuration of transition metals typically involves filling the (n-1)d orbitals along with the ns orbitals, where n is the principal quantum number of the outermost shell.
Recognize that what makes transition metals unique is that even after they lose electrons to form ions, they often retain partially filled d orbitals, which is different from main group elements where valence electrons are usually lost from the outermost s orbital first.
Note that the statement about completely filled p orbitals is incorrect because transition metals do not have their valence electrons in p orbitals; p orbitals are filled in main group elements.
Understand that the electron configurations of transition metals can sometimes deviate from the predicted order due to electron-electron interactions and stability considerations, so the claim that they never deviate is false.
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