Electron Configuration Quiz: O2- and Na+ Ions
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Questions and Answers

What is the defining characteristic of a d-block element?

  • Outermost electron in an f-orbital
  • Outermost electron in a d-orbital (correct)
  • Outermost electron in a p-orbital
  • Outermost electron in an s-orbital

Which of the following elements is NOT classified as a transition metal?

  • Scandium
  • Copper
  • Titanium
  • Zinc (correct)

In the electron configuration of Zinc (Zn), how are the d-orbitals filled?

  • Partially filled for the atom but completely filled for the ion
  • Completely filled for both the atom and the ion (correct)
  • Completely filled for the atom but partially filled for the ion
  • Partially filled for both the atom and the ion

What is the general order followed when writing electron configurations for transition metals?

<p>4s before 3d (A)</p> Signup and view all the answers

In which sublevel are the electrons placed singularly before being paired?

<p>d-sublevel (B)</p> Signup and view all the answers

Which element violates the usual rule of having one unpaired electron in the 4s orbital?

<p>Copper (A)</p> Signup and view all the answers

When considering electron spins, what must be true for electrons in the same orbital?

<p>They must have opposite spins (D)</p> Signup and view all the answers

Which of the following elements shows a different electron configuration in its ion form compared to its neutral atom form?

<p>Silver (B)</p> Signup and view all the answers

Which element has a half-filled 3d subshell in its electron configuration?

<p>Chromium (B)</p> Signup and view all the answers

What is the electron configuration of Copper (Cu)?

<p>[Ar] 4s1 3d10 (B)</p> Signup and view all the answers

When do covalent bonds form?

<p>When orbitals overlap with each other (D)</p> Signup and view all the answers

What type of bond is formed when p-orbitals overlap "side-to-side"?

<p>Pi (Ï€) bond (A)</p> Signup and view all the answers

In electron configurations, what does [Ne] represent?

<p>Neon (A)</p> Signup and view all the answers

What is the electron configuration of Cobalt (Co2+)?

<p>[Ar] 4s2 3d7 (C)</p> Signup and view all the answers

Which element violates the usual rule by having a different electron configuration in its ion form compared to its neutral atom form?

<p>Copper (C)</p> Signup and view all the answers

What is the electron configuration of Fe3+?

<p>[Ar] 3d5 (D)</p> Signup and view all the answers

Which element has the electron configuration [Kr]5s24d105p5?

<p>Bromine (Br) (A)</p> Signup and view all the answers

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