Problem: Niobium (Nb; Z = 41) has an anomalous ground-state electron configuration for a Group 5B(5) element: [Kr] 5s14d4. What is the expected electron configuration for elements in this group? Draw partial orbital diagrams to show how paramagnetic measurements could support niobium’s actual configuration.

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FREE Expert Solution

The electron configuration describes the distribution of electrons within its orbitals.

Each orbital can only contain a specific maximum number of electrons:

s = 2 electrons

p = 6 electrons

d = 10 electrons

f = 14 electrons


a. The condensed electron configuration of Niobium, showing only the 5 valence electrons is:

Nb: [Kr] 5s1 4d4

  • The 5 in 5s1 represents the highest principal quantum number of the element.
  • The following orbital is 1 less than the highest principal quantum number.
  • The noble gas  configuration expression is:
  • [Noble Gas] ns1 (n-1)d4


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Problem Details

Niobium (Nb; Z = 41) has an anomalous ground-state electron configuration for a Group 5B(5) element: [Kr] 5s14d4. What is the expected electron configuration for elements in this group? Draw partial orbital diagrams to show how paramagnetic measurements could support niobium’s actual configuration.

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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.