Atomic Structure in Chemistry Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. What is the largest principal quantum number that a calcium electron can have?

Question 2 2. Which of the following sets of quantum numbers CAN exist?

Question 3 3. When an electron moves from an excited state to a ground state, it will _____.

Question 4 4. What is the maximum number of electrons that can be found in a 5p cluster (or orbital) of a single atom?

Question 5 5.

A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead?

(The molecular mass of carbon is 12 g/mol.)

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Question 6 6. X and Y are elements that are isotopes to each other. Which of the following is true about X and Y?

Question 7 7. Which of the following is an example of when an electron absorbs energy?

Question 8 8. What is the correct electron configuration for an atom of sodium (Na)?

Question 9 9.

A piece of copper wire contains 5 moles of copper atoms. What is its mass?

(The molecular mass of copper is 63.5 g/mol.)

Question 10 10. When writing electron configurations, electrons are represented in their lowest possible energy state, called their _____.

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Question 11 11. Magnesium has three common isotopes. Based on its average atomic mass, which is the most common?

Question 12 12. How many neutrons does the most common isotope of hydrogen have?

Question 13 13. ALL atoms of the same element have:

Question 14 14. The nucleus of an atom:

Question 15 15. How are isotopes of the same element similar?

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Question 16 16. If Atom #1 has 19 protons and 22 neutrons, and Atom #2 has 20 protons and 22 neutrons, are these isotopes of the same element?

Question 17 17. What did Rutherford discover in his gold foil experiment?

Question 18 18. The Bohr model of the atom:

Question 19 19.

A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain?

(Aluminum has a molecular mass of 27 g/mol.)

Question 20 20. Which element has a mass number of 12 and contains 6 neutrons?

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Question 21 21. Which letter orbital corresponds to l = 2?

Question 22 22. What is the principal quantum number for the last electron that is added to potassium?

Question 23 23. A tenth of a mole of pennies contains how many pennies?

Question 24 24. Why did Democritus disagree with Aristotle?

Question 25 25. Who first coined the term atom, meaning indivisible?

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Question 26 26. The mass number indicates:

Question 27 27. Which scientist is credited with discovering the charge of individual electrons?

Question 28 28. Which of the following was the instrument used for the discovery of the electron?

Question 29 29. Which block is manganese (Mn) located in?

Question 30 30. What should the electron configuration for neon (Ne) end with? Is it going to be a stable atom or a reactive atom?

Atomic Structure in Chemistry Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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