Name: ____________________________________
Class: _____________
Date: _____________
Lesson Assessment: Grouping of Elements in the Periodic Table
1. What property is common to all ions formed from atoms within a group?
a) They are the same size.
b) They have the same charge.
c) They have the same atomic masses.
d) They have the same atomic numbers.
2. How many rows are usually shown in the periodic table?
a) 7
b) 18
c) 24
d) 12
3. How does an atom in the third period relate to an atom in the sixth period with regard to size?
a) The two atoms are the same size.
b) The seventh period atom has a larger radius.
c) The third period atom is slightly larger.
d) The seventh period atom has a smaller radius.
4. Which elements are most likely to gain electrons and form anions?
a) noble gases
b) alkaline earth metals
c) alkali metals
d) halogens
5. The elements are broadly classified as _____.
a) atoms, carbons, and ions
b) atoms, molecules, and ions
c) metals, semimetals, and nonmetals
d) metals, gases, and liquids
PAGE 1
Name: ____________________________________
Class: _____________
Date: _____________
Lesson Assessment: Grouping of Elements in the Periodic Table
6. How does first ionization energy relate to atom size across a period?
a) Ionization energy increases with decreasing atomic radius.
b) Ionization energy increases with increasing atomic radius.
c) Ionization energy decreases with increasing atomic radius.
d) Ionization energy decreases with decreasing atomic radius.
7. What element begins the lanthanide series?
a) ytterbium
b) lutetium
c) lanthanum
d) lithium
8. Which element property identifies the number of protons in an atom?
a) ionization energy
b) electronegativity
c) atomic number
d) atomic mass
9. How does first ionization energy relate to atom size when moving down a column in the periodic table?
a) Ionization energy increases with decreasing atomic radius.
b) Ionization energy decreases with decreasing atomic radius.
c) Ionization energy decreases with increasing atomic radius.
d) Ionization energy increases with increasing atomic radius.
10. Which group contains elements with the fewest valence electrons?
a) noble gases
b) alkali metals
c) halogens
d) alkaline earth metals
PAGE 2
ANSWER KEY
1. b
2. a
3. b
4. d
5. c
6. a
ANSWER KEY Page 1
7. c
8. c
9. c
10. b