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| 1. What is the energy of one mole of light that has a wavelength of 400 nm? | ||
| (a) | 4.97 x 10-28 J | |
| (b) | 4.97 x 10-19 J | |
| (c) | 2.99 x 10-4 J | |
| (d) | 2.99 x 105 J | |
| 2. Helium can be singly ionized by losing one electron to become the He+ cation. Which of the following statements is true concerning this helium cation? | ||
| (a) | The line spectrum of this helium cation will resemble the line spectrum of a hydrogen atom. | |
| (b) | The line spectrum of this helium cation will resemble the line spectrum of a lithium cation. | |
| (c) | The line spectrum of this helium cation will remain the same as for unionized helium. | |
| (d) | The line spectrum of this helium cation will resemble the line spectrum of a lithium atom. | |
| 3. Which of the following atoms has the largest diameter? | ||
| (a) | F | |
| (b) | Cl | |
| (c) | Br | |
| (d) | I | |
| 4. Which of the following ions has the smallest diameter? | ||
| (a) | O2- | |
| (b) | Na+ | |
| (c) | F- | |
| (d) | Al3+ | |
| 5. Which of the following elements has the greatest electronegativity? | ||
| (a) | Si | |
| (b) | P | |
| (c) | N | |
| (d) | O | |
| 6. Which element would have the greater difference between the first ionization energy and the second ionization energy? | ||
| (a) | potassium | |
| (b) | calcium | |
| (c) | Both should have the same differences because they are in the same period of the periodic table. | |
| 7. Which element would have the higher electron affinity? | ||
| (a) | chlorine | |
| (b) | bromine | |
| (c) | Both should have the same electron affinity because they are in the same group of the periodic table and both will gain only 1 electron. | |
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