Use the portion of the periodic table shown below to answer the questions.

Question

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How did you determine which elements have the same properties as potassium (K)?

Group of answer choices

Because the elements are in the same group and have the same # of valence electrons

Because they are metals

Because the elements are in the same period and have the same # of valence electrons

Because they are all nonmetals

Answer 1

To determine which elements have the same properties as potassium (K), you would choose:

Because the elements are in the same group and have the same # of valence electrons.

Potassium (K) is in Group 1 of the periodic table, which is known as the alkali metals. Elements in the same group have similar chemical properties because they have the same number of valence electrons, which influences their reactivity and bonding behavior.