Early Atomic Theory and Structure
True / False
If the statement is True, write True on your answer sheet. If the statement is False, correct the
statement so it reads true.
| 1. |
An atom of oxygen has two elections in a 1s orbital, two electrons in a 2s orbital, and one electron in each of three different 2p orbitals.
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| 2. |
In the ground state, electrons tend to occupy orbitals of the lowest possible energy.
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| 3. |
The second principal energy level contains only s and p sublevels.
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| 4. |
The 4s energy sublevel fills before the 3d sublevel because the 4s is at a higher energy level.
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| 5. |
The element represented by 1s22s22p63s23p2 has an atomic number of
13.
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Multiple Choice
Mark the letter that is the best choice as the answer.
| 6. |
The correct electron structure for a flourine atom, F, is what?
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| 7. |
Which of elements have two s electrons and five p electrons in its outer energy level?
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| 8. |
As the wavelength of light increases, its energy does what?
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| 9. |
Red light has _______ energy; blue light has ______ energy.
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Short Answer
| 10. |
How many protons are in the nucleus of an atom of Sb?
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| 11. |
What special names are given to the isotopes of hydrogen?
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| 12. |
Write the isotopic notation for Z = 3 A = 6
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| 13. |
Naturally occurring lead exists as four stable
isotopes: 204Pb with a mass of 203.973 amu (1.480%); 206Pb
205.974 amu (23.60%); 207Pb, 206.9759 amu (22.60%);and 208Pb,
207.9766 amu (52.30%). Calculate the average atomic mass of lead. |
| 14. |
Write the isotopic notation for an atom containing 15 protons; 16 neutrons and 15 electrons
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| 15. |
What letters are used to designate the types of orbitals?
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| 16. |
Give the electron configuration for Kr.
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| 17. |
Give the electron configuration for Fe.
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| 18. |
Write the electron configuration for the element with an atomic number 11
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| 19. |
Which elements have these electron configurations? | [Ar]4s23d8 | | [Kr]5s24d105p1 |
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Essay
Answer the following essay questions in complete sentences.
| 20. |
Describe the lab for this chapter (Emission Spectra). In your description, you need to use the following words:
spectrum tube | energy level | diffraction grating | wavelength | electron | emission spectrum | quanta | spectral lines | hydrogen |
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| 21. |
What contribution did these scientists make to atomic models of the atom: Dalton, Thomson, Rutherford?
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