Electron Configuration and Exceptions

The video tutorial introduces shorthand electron configuration, explaining how it simplifies writing electron configurations by using noble gases. It provides examples with Nickel and Yttrium and discusses exceptions in electron configurations, focusing on Chromium and Copper. The tutorial highlights the stability achieved by half-filled and fully filled orbitals, explaining how electrons are rearranged to achieve this stability.

What is one advantage of using shorthand electron configuration over longhand?

• It is more detailed.

• It is less accurate.

• It is quicker and simpler.

• It uses more symbols.

When writing the shorthand electron configuration, which element's configuration is used as a reference?

• The element itself

• The noble gas in the same row

• The first element in the periodic table

• The noble gas in the row above

What is the shorthand electron configuration for Nickel?

• [Kr] 5s2 4d8

• [Xe] 6s2 5d8

• [Ar] 4s2 3d8

• [Ne] 3s2 3p6 4s2 3d8

Which noble gas is used in the shorthand electron configuration for Yttrium?

• Xenon

• Argon

• Neon

• Krypton

What is the shorthand electron configuration for Potassium?

• [Ne] 3s1

• [Ar] 4s1

• [Xe] 6s1

• [Kr] 5s1

Why does Chromium have an unusual electron configuration?

• It prefers an empty d orbital.

• It prefers a full p orbital.

• It prefers a half-filled d orbital.

• It prefers a full s orbital.

What is the actual electron configuration for Chromium?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d5

• 1s2 2s2 2p6 3s2 3p6 4s1 3d5

• 1s2 2s2 2p6 3s2 3p6 4s1 3d4

• 1s2 2s2 2p6 3s2 3p6 4s2 3d4

Which group of elements shares the same electron configuration exception as Chromium?

• Alkali metals

• Halogens

• Noble gases

• Transition metals

What is the reason for Copper's electron configuration exception?

• To achieve a completely filled d orbital

• To achieve a half-filled s orbital

• To achieve an empty s orbital

• To achieve a half-filled p orbital

Which elements share the same electron configuration exception as Copper?

• Iron, Cobalt, Nickel

• Silver, Gold, Roentgenium

• Zinc, Cadmium, Mercury

• Lead, Tin, Bismuth