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Read This!!
Note the bold "zigzag line" on the right-hand side of the periodic table on the last page. In general, metals (e. g. Mg.
AI, K, Na, Cu, Zn) are found to the left of this line, and nonmetals to the right (e. g. CN. O, CI). A notable exception
is hydrogen, H. Although it's located far to the left, it is classified as a nonmetal. The vertical columns in the periodic
table are called Groups, while the horizontal rows are call periods.
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34. Write the symbol for the element that is in...
a.) Group 1A and period 2: __ b.) Group 2A and period 3: c.) Group 7A and period 2:
35. In what group of the periodic table are the metals lithium (Li), sodium (Na) and potassium (K):
36. What is the charge of lithium and sodium ions?
37. Predict the charge of potassium ions. Explain your reasoning.
38. In what group of the periodic table are the nonmetals fluorine (F), Chlorine (CI) and bromine (Br):
39. What is the charge of fluoride ions?
40. Predict the charge of chloride and bromide ions. Explain your reasoning.
True/False Enter in the space T for true, F for False and correct all false statements to make them true.
41. When metals form ions they tend to lose one or more protons and in the process form ions with a negative
charge
42. When nonmetals form ions they tend to gain one or more electrons and in the process form ions with a
partially filled valence shell.
43.
Tons are less stable than the atoms they are derived from
Tons are less stal
The Chemical Basis of Life: Atomic Structure - Page 7 of 8