Electron Configuration and Exceptions Quiz

Which of the following elements has an unexpected electron configuration due to its orbital energy levels?

• Sodium

• Neon

• Helium

• Chromium

What is the correct electron configuration ending for copper, considering its exception?

• 4s1 3d9

• 4s2 3d10

• 4s1 3d10

• 4s2 3d9

Which mnemonic is used to remember the elements with a single valence level s electron?

• A tiny dog on a porch

• A fish in a pond

• A cat on a roof

• A bird in a tree

Which two elements are specifically mentioned in the mnemonic involving a tiny dog?

• Carbon and Silicon

• Iron and Nickel

• Gold and Silver

• Ruthenium and Rhodium

What analogy is suggested to help remember the exceptions in electron configurations?

• A dancer's feet

• A bodybuilder's forearms

• A singer's voice

• A painter's brush