Name: _________________________________
Class period: ___________________
Quiz 2.3
Periodic Table Trends
1. The size of an element’s atomic radius __________ from left to right across the periodic table.
a. increases
b. decreases
c. remains constant
d. is randomly assigned
2. In the modern periodic table, elements are ordered
a. according to decreasing atomic mass
b. according to Mendeleev’s original design
c. according to increasing atomic number
d. based on when they were discovered
3. Beryllium and calcium ______ based on their position on the periodic table.
a. are less reactive than lithium and potassium
b. are less reactive than neon and krypton
c. have larger atomic radius than lithium and sodium
d. have the same number of valence electrons as chlorine and bromine
4. Name the only element touching the stair-step line that is NOT a metalloid
a. Silicon (Si)
b. Boron (B)
c. Aluminum (Al)
d. Arsenic (As)
5. Lithium and potassium are ____ based on their positions on the periodic table.
a. alkali metals
b. transition metals
c. halogens
d. noble gases
6. How many valence electrons does one atom of Tin (Sn) have?
a. 4
b. 14
c. 50
d. 116
7. Fluorine and chlorine are ____ based on their positions on the periodic table.
a. alkaline-earth metals
b. halogens
c. transition elements actinides
d. noble gases
8. As you move down the periodic table in a family (group) the atomic radius
a. increase
b. decrease
c. do not change
d. vary unpredictably
9. An atom in the ground state contains 8 valence electrons. This atom is classified as a
a. metal
b. noble gas
c. semimetal
d. halogen
10. Which element has properties that most resemble argon?
a. Oxygen (O)
b. Barium (Ba)
c. Krypton (Kr)
d. zinc (Zn)
11. Unknown element X has four energy levels, five valence electrons, and is a metalloid. What is element X?
a. Silicon (Si)
b. Germanium (Ge)
c. Selenium (Se)
d. Arsenic (As)
For questions 12-14, classify each substance in the data table as (A) metal
Element
J
Q
Y
Malleable or
brittle
malleable
brittle/yellow
malleable/grey
Luster
Conductor
dull
dull
shiny
yes
no
yes
High melting
point
no
no
yes
(B) nonmetal (C) metalloid
Metal, nonmetal, or
metalloid?
12
13
14
15. Which statement is true about the properties of the elements in any one period of the Periodic Table?
a. They are determined by the number of orbitals
b. They are determined by the number of electrons in the first shell
c. They change in a random, unpredictable manner
d. They are determined by the number of valence electrons in the outer orbital
16. Which elements are found close to the right side of the Periodic Table?
a. nonmetals
b. metals
c. metalloids
d. earth metals
17. How many different types of elements are in 4K2CO3
a. 3
b. 24
c. 8
d. 20
Use the periodic table below to answer questions 18 -21
1
2
3
9
4
8
11 6
7
5
10
18. In which family are all the elements chemically unreactive?
a. 1
b. 2
c. 3
d. 4
e. 1 & 2
19. In which region are the elements poor conductors of electricity?
a. 1
b. 2
c. 3
d. 4
e. 1 & 2
20. Which region are the metalloids?
a. 1
b. 2
c. 3
d. 4
21. In which region are the metals?
a. 1
b. 2
c. 3
d. 4
e. 1 & 2
22. If an atom has 6 electrons, it has _______ electrons in the first shell and ________ in the second shell.
a. 2,2,2
b. 2 ,4
c. 2, 6
d. 6,2
Short answers. Use complete sentences:
In terms of electrons and atomic structure, account for what happens to atomic radius and reactivity
23) as you move down a group?
24) across a period?
25. Draw a Lewis electron-dot structure for an atom of phosphorus.