Question

18.How are properties used to classify elements in periods in the

arrangement of the periodic table?
Responses
A. The properties change across a period, classifying elements into
groups.
B. The properties change across a period, classifying elements as
metals, metalloids, and nonmetals.
C. The properties of elements are similar across a period, classifying
elements into groups.
D. The properties of elements are similar across a period, classifying
elements as metals, metalloids, and nonmetals.

Answer 1

In the arrangement of the periodic table, properties of elements in a period are similar, classifying elements into groups.

Step-by-step explanation:

In the arrangement of the periodic table, elements in a period have similar properties. This means that the properties of elements are similar across a period, classifying elements into groups. For example, the elements in the first period all have one valence electron, while the elements in the second period have two valence electrons. This pattern continues across the periodic table.

Therefore, option C is the correct answer: The properties of elements are similar across a period, classifying elements into groups.

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