Question

question 1: standard c.pm.2
match the term to the definition below:
a column of elements in the periodic table that share the same number of valence electrons and the same properties.
a. class
b. period
c. group
d. cluster

question 2: standard c.pm.2
what is the period number of platinum?
a. 3
b. 6
c. 10
d. 16

question 3: standard c.pm.2
which element is part of group 4 on the periodic table?
a. calcium
b. copper
c. indium
d. zirconium

question 4: standard c.pm.2
what group is the element barium part of?
a. alkali metals
b. alkaline earth metals
c. metalloids
d. noble gases

question 5: standard c.pm.2
which one of the following elements is not in the metalloid group?
a. carbon
b. arsenic
c. silicon
d. tellurium

Explanation:

1. For Question 1: Columns of elements with matching valence electrons and properties are defined as groups on the periodic table.
2. For Question 2: Platinum (Pt) has an atomic number of 78, and it is located in the 6th row (period) of the periodic table.
3. For Question 3: Zirconium (Zr) is in group 4; Calcium is group 2, Copper is group 11, Indium is group 13.
4. For Question 4: Barium (Ba) is in group 2, which is the alkaline earth metals group.
5. For Question 5: Carbon is a non-metal; Arsenic, Silicon, and Tellurium are classified as metalloids.

Answer:

1. c. Group
2. b. 6
3. d. Zirconium
4. b. Alkaline earth metals
5. a. Carbon