Question

section 6.2 classification of the elements
in your textbook, read about organizing the elements by electron configuration.
use the periodic table on pages 178 - 179 in your textbook to match each element in
column a with the element in column b that has the most similar chemical properties.
column a

1. arsenic (as)
2. bromine (br)
3. cadmium (cd)
4. gallium (ga)
5. germanium (ge)
6. iridium (ir)
7. magnesium (mg)
8. neon (ne)
9. nickel (ni)
10. osmium (os)
11. sodium (na)
12. tellurium (te)
13. tungsten (w)
14. yttrium (y)
15. zirconium (zr)

column b
a. boron (b)
b. cesium (cs)
c. chromium (cr)
d. cobalt (co)
e. hafnium (hf)
f. iodine (i)
g. iron (fe)
h. nitrogen (n)
i. platinum (pt)
j. scandium (sc)
k. silicon (si)
l. strontium (sr)
m. sulfur (s)
n. zinc (z)
o. xenon (xe)

Explanation:

• Arsenic (As): Group 15 element. Nitrogen (N) is also in Group 15.
• Bromine (Br): Group 17 (halogen). Iodine (I) is also a halogen.
• Cadmium (Cd): Group 12. Zinc (Zn) is in Group 12.
• Gallium (Ga): Group 13. Boron (B) is in Group 13.
• Germanium (Ge): Group 14. Silicon (Si) is in Group 14.
• Iridium (Ir): Platinum - group metal. Platinum (Pt) is in the same group.
• Magnesium (Mg): Group 2. Strontium (Sr) is in Group 2.
• Neon (Ne): Noble gas. Xenon (Xe) is a noble gas.
• Nickel (Ni): Transition metal. Iron (Fe) is a transition metal.
• Osmium (Os): Transition metal. Iridium (Ir) and osmium (Os) are in the same group of transition metals (Group 8). But since iridium is already used for another match, and cobalt (Co) is also a transition metal.
• Sodium (Na): Group 1. Cesium (Cs) is in Group 1.
• Tellurium (Te): Group 16. Sulfur (S) is in Group 16.
• Tungsten (W): Transition metal. Chromium (Cr) is a transition metal.
• Yttrium (Y): Transition metal. Scandium (Sc) is a transition metal.
• Zirconium (Zr): Group 4. Hafnium (Hf) is in Group 4.

Answer:

1. h. nitrogen (N)
2. f. iodine (I)
3. n. zinc (Z)
4. a. boron (B)
5. k. silicon (Si)
6. i. platinum (Pt)
7. l. strontium (Sr)
8. o. xenon (Xe)
9. g. iron (Fe)
10. d. cobalt (Co)
11. b. cesium (Cs)
12. m. sulfur (S)
13. c. chromium (Cr)
14. j. scandium (Sc)
15. e. hafnium (Hf)