Question

Which pair of elements have chemical properties that are most similar

Answer 1

Al and Ga are the most similar because they are close to each other in the same group of the periodic table. Option B

Why are Al and Ga very similar?

Because both gallium (Ga) and aluminum (Al) are found in Group 13 of the periodic table, they have a lot in common. Due to their shared three valence electrons, both elements have similar chemical properties and display metallic traits like high melting points. Another similarity between them is their ability to form oxides.

Their shared group and valence electron configuration are credited with the general similarity, highlighting periodicity and systematic trends in the properties of elements within the periodic table.

Answer 2

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Answer:

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Elements on the periodic table that are the closest in characteristics are in the same group, or column.

Looking at the answer choices, the only two pairs of elements that are in the same group are (B) Al and Ga, as well as (D) F and I.

On the periodic table, Al (Aluminum) and Ga (Gallium) are only one period (row) away from each other, while F (Flourine) and I (Iodine) are 3 periods away.

***Periods determine the number of energy levels and other properties, so elements that are closer to each other would have more similar properties.

Therefore, Aluminum and Gallium contain the most similar chemical properties.