Elements and Ions Quiz

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Questions and Answers

What is the cation formed by the element Potassium?

  • K
  • K$^{3+}$
  • K$^+$ (correct)
  • K$^{2+}$

Which element forms a cation with a +2 charge?

  • Lithium
  • Magnesium (correct)
  • Aluminum
  • Potassium

What is the correct symbol for the cation of Beryllium?

  • Be$^+$
  • Be$^{2+}$ (correct)
  • Be$^{3+}$
  • Be

Which of the following is NOT an alkali metal?

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

What is the charge of the cation formed by Aluminum?

<p>+3 (C)</p> Signup and view all the answers

Flashcards

Lithium Cation

Li$^+$ is the cation formed when a lithium atom loses one electron.

Sodium Cation

Sodium is in Group 1 and forms a +1 cation, Na$^+$ when it loses one electron.

Beryllium Cation

Beryllium is in Group 2 and forms a +2 cation, Be$^{2+}$ when it loses two electrons.

Calcium Cation

Calcium is in Group 2 and forms a +2 cation, Ca$^{2+}$ when it loses 2 electrons.

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Aluminum Cation

Aluminum is in Group 3 and forms a +3 cation, Al$^{3+}$ by losing its 3 valence electrons to achieve a stable electron configuration.

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Study Notes

Elements & Ions

  • Quiz #1 was on Tuesday, January 28, 2022.
  • Elements and their respective cations are listed.
  • Lithium (Li) cation is Li+.
  • Sodium (Na) cation is Na+.
  • Potassium (K) cation is K+.
  • Rubidium (Rb) cation is Rb+.
  • Cesium (Cs) cation is Cs+.
  • Beryllium (Be) cation is Be2+.
  • Magnesium (Mg) cation is Mg2+.
  • Calcium (Ca) cation is Ca2+.
  • Strontium (Sr) cation is Sr2+.
  • Barium (Ba) cation is Ba2+.
  • Aluminum (Al) cation is Al3+.

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