Decide which element probably has a boiling point most and least similar to the boiling point of aluminum. Comparing boiling point:
gallium rubidium magnesium oxygen
most similar to aluminum
least similar to aluminum

The boiling point of gallium would be most similar to aluminum, and the boiling point of oxygen would be least similar to aluminum.

Explanation:

The atomic number of aluminum is 13, in the periodic table, magnesium lies in a similar period as Aluminum and Gallium is also present in a similar group. Thus, it can be expected that both magnesium and gallium exhibits similar boiling points with aluminum. However, gallium is a poor non-metal just like aluminum, while magnesium is a metal. Thus, it can be said that the boiling point of aluminum is more similar to gallium.

Now of the given elements, oxygen is a gas, thus, the boiling point of oxygen would be least similar to aluminum.

the correct answer is option d

explanation:

i was wrong its d because they dont use cm when calculating square roots