Multiple Choice
Give the set of four quantum numbers that represent the indicated electron in each of the following elements.
Mg (7th electron)
10. Periodic Properties of the Elements
The Electron Configuration: Quantum Numbers
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Consider the following electron configurations to answer the question.(i) 1s22s22p63s23p64s23d104p65s1
(ii) 1s22s22p63s23p5
(iii) 1s22s22p63s23p64s23d8
(iv) 1s22s22p63s23p64s23d104p6
(v) 1s22s22p43s1
An example of a configuration of a transition metal is ________.
A
(i)
B
(ii)
C
(iii)
D
(iv)
E
(v)
Verified step by step guidance1
Understand the definition of a transition metal: Transition metals are elements found in the d-block of the periodic table, which typically have partially filled d orbitals.
Examine each electron configuration to identify which one corresponds to a transition metal. Look for configurations with partially filled d orbitals.
Configuration (i): 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^1. This has a filled 3d orbital, not a partially filled one.
Configuration (ii): 1s^2 2s^2 2p^6 3s^2 3p^5. This does not involve d orbitals, so it cannot be a transition metal.
Configuration (iii): 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^8. This has a partially filled 3d orbital, indicating it is a transition metal.
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