15 Visual Connection Questions

1 . Figure 2.3 How many neutrons do carbon-12 and carbon-13 have, respectively?

2 . Figure 2.7 An atom may give, take, or share electrons with another atom to achieve a full valence shell, the most stable electron configuration. Looking at this figure, how many electrons do elements in group 1 need to lose in order to achieve a stable electron configuration? How many electrons do elements in groups 14 and 17 need to gain to achieve a stable configuration?

3 . Figure 2.24 Which of the following statements is false?

  1. Molecules with the formulas CH3CH2COOH and C3H6O2 could be structural isomers.
  2. Molecules must have a double bond to be cistrans isomers.
  3. To be enantiomers, a molecule must have at least three different atoms or groups connected to a central carbon.
  4. To be enantiomers, a molecule must have at least four different atoms or groups connected to a central carbon.

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Biology 2e Part I, 2nd edition Copyright © 2022 by LOUIS: The Louisiana Library Network is licensed under a Creative Commons Attribution 4.0 International License, except where otherwise noted.

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