Question

periodic table
metals vs. nonmetals
match the description on the left with the appropriate letter on the right.

1. ____ tend to form anions.
2. ____ good conductors of heat and electricity.
3. ____ found on the lower left side of the periodic table.
4. ____ solids are usually brittle.
5. ____ malleable and lustrous.

periodic trends
rank the following atoms in order from smallest to largest atomic radius.

1. cs, k, o, se
2. ba, fe, p, ti

rank the following atoms in order from smallest to largest first ionization energy.

1. ar, rb, sn, xe
2. c, f, mg, sr

groups of the periodic table
match the descriptions with the choices below. not all terms will be used.
k. alkali metals
o. nitrogen family
r. noble gases
l. alkaline earth metals
p. oxygen family
s. transition metals
m. boron family
q. halogens
t. inner transition metals
n. carbon family

1. ____ often form colored compounds and many can form ions with varying charges.
2. ____ relatively unreactive.
3. ____ tend to form ions with a -2 charge.
4. ____ many are radioactive.
5. ____ tend to form ions with a +2 charge.
6. ____ soft metals that react vigorously with water to form alkaline solutions.
7. ____ includes the technologically significant semimetal, silicon.
8. ____ very reactive with high electronegativity.

Explanation:

Step1: Recall properties of metals and non - metals

Non - metals tend to gain electrons and form anions. Metals are good conductors of heat and electricity, found on the lower left side of the periodic table, are malleable and lustrous. Non - metal solids are usually brittle.

1. Non - metals (D) tend to form anions.
2. Metals (C) are good conductors of heat and electricity.
3. Metals (C) are found on the lower left side of the Periodic Table.
4. Non - metals (D) have solids that are usually brittle.
5. Metals (C) are malleable and lustrous.

Step2: Recall periodic trends in atomic radius

Atomic radius increases down a group and decreases across a period.

1. O < Se < K < Cs
2. P < Ti < Fe < Ba

Step3: Recall periodic trends in first ionization energy

First ionization energy generally increases across a period and decreases down a group.

1. Rb < Sn < Xe < Ar
2. Sr < Mg < C < F

Step4: Recall properties of periodic table groups

Transition metals often form colored compounds and variable - charged ions. Noble gases are relatively unreactive. Oxygen family elements tend to form - 2 ions. Inner transition metals are often radioactive. Alkaline earth metals form + 2 ions. Alkali metals react vigorously with water. The carbon family includes silicon. Halogens are very reactive with high electronegativity.

1. S. transition metals
2. R. noble gases
3. P. oxygen family
4. T. inner transition metals
5. L. alkaline earth metals
6. K. alkali metals
7. N. carbon family
8. Q. halogens

Answer:

1. D. nonmetals
2. C. metals
3. C. metals
4. D. nonmetals
5. C. metals
6. O < Se < K < Cs
7. P < Ti < Fe < Ba
8. Rb < Sn < Xe < Ar
9. Sr < Mg < C < F
10. S. transition metals
11. R. noble gases
12. P. oxygen family
13. T. inner transition metals
14. L. alkaline earth metals
15. K. alkali metals
16. N. carbon family
17. Q. halogens