Question

question 13 of 39
group the elements into pairs that would most likely exhibit similar chemical properties.
it does not matter which pair of elements is pair 1, pair 2, or pair 3, so long as the correct elements are paired.
pair 1 pair 2 pair 3
answer bank
se li o f k br

Explanation:

Step1: Recall periodic table groups

Elements in the same group (vertical column) of the periodic table have similar chemical properties because they have the same number of valence electrons.

• Lithium (Li) and Potassium (K) are in Group 1 (alkali metals), so they should be paired.
• Fluorine (F) and Bromine (Br) are in Group 17 (halogens), so they should be paired.
• Sulfur (S) and Oxygen (O) are in Group 16 (chalcogens), so they should be paired.

Step2: Form the pairs

Pair 1: Li, K (Group 1 elements)
Pair 2: F, Br (Group 17 elements)
Pair 3: S, O (Group 16 elements)

Answer:

Pair 1: Li, K
Pair 2: F, Br
Pair 3: S, O