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Constructed Response . Topic 3: Atomic Structure

Set I: Atomic structure, mass number, Lewis electron-dot diagrams, isotope

Base your answers to questions 22 through 57 on the information below.

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22. Identify one piece of information shown in the 22.

electron-shell diagrams that is not shown in the

Lewis electron-dot diagrams.

23. Determine the mass number of the magnesium 23.

atom represented by the electron-shell diagram.

24. Based on the information given in the electron 24.

shell symbol, write the isotope symbol for the

aluminum atom.

25. Based on the information provided on the 25. Atom:

diagrams, draw Lewis electron – dot diagrams

for the atom and for the ion of magnesium. Ion:

26. Explain why Lewis electron-dot diagrams are 26.

generally more suitable than electron-shell

diagrams for illustrating chemical bonding.

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