Problem: Name the element described in the following: Forms 2+ ion with electron configuration [Ar] 3d3.
FREE Expert Solution
Neutral element: Atomic number = # protons = # of electrons
- Cation with charge = 2+: lost 2 electrons
- Recall:
s orbital → can hold a maximum of 2 electrons
p orbitals → can hold a maximum of 6 electrons
d orbitals → can hold maximum of 10 electrons
f orbitals → can hold maximum of 14 electrons
Electron configuration: [Ar]3d3
- [Ar]: atomic # = 18 → 18 e-
- [Ar] = 1s22s22p63s23p6
- 3d3 → 3 e- in d orbital
Total electrons in cation = 18 + 3 = 21
Total electrons of neutral element = 21 + (2) = 23
- electron configuration of neutral element: 1s22s22p63s23p64s23d3
- transition metals → lose e- from highest energy orbital (4s)
- s orbital first before the d orbital
Problem Details
Name the element described in the following: Forms 2+ ion with electron configuration [Ar] 3d3.
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Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.