Question

1. a vertical column on the periodic table is called a

a. period
b. row
c. group
d. family group

1. a horizontal row on the periodic table is called a

a. period
b. family
c. group
d. column

1. elements in the same group have the same number of

a. protons
b. neutrons
c. electron shells
d. valence electrons

1. metals are located on the periodic table

a. on the right
b. on the left
c. in the upper right corner only
d. only in the first transition row

1. which element is a nonmetal?

a. sodium
b. magnesium
c. chlorine
d. aluminum

1. metalloids are found

a. scattered randomly
b. in the noble gas group
c. along the staircase line
d. only in group 1

1. the alkali metals are found in:

a. group 1
b. group 2
c. group 17
d. group 18

1. halogens are in:

a. group 1
b. group 2
c. group 17
d. group 18

Explanation:

Let's solve question 7 first (The alkali metals are found in:).

Step1: Recall alkali metals' group

Alkali metals include elements like Lithium, Sodium, Potassium, etc. By definition, alkali metals are in Group 1 of the periodic table.

Step2: Match with options

Option A is Group 1, which matches the position of alkali metals. Options B (Group 2) is alkaline earth metals, C (Group 17) is halogens, D (Group 18) is noble gases.

Step1: Recall halogens' group

Halogens include Fluorine, Chlorine, Bromine, etc. Halogens are known to be in Group 17 of the periodic table.

Step2: Match with options

Option C is Group 17, which is correct. Group 1 is alkali metals, Group 2 is alkaline earth metals, Group 18 is noble gases.

Step1: Classify elements

• Sodium (Na) is an alkali metal (Group 1), metal.
• Magnesium (Mg) is an alkaline earth metal (Group 2), metal.
• Chlorine (Cl) is in Group 17, a halogen, nonmetal.
• Aluminum (Al) is a metal (Group 13).

Step2: Identify nonmetal

Among the options, Chlorine is a nonmetal.

Answer:

A. Group 1

Now question 8 (Halogens are in:).