Question

Which of the following groups of elements is listed in increasing order based on the percent by mass in Earth's crust?

a. Oxygen, Silicon, Iron, Aluminum
b. Aluminum, Iron, Silicon, Oxygen
c. Silicon, Aluminum, Iron, Oxygen
d. Iron, Oxygen, Silicon, Aluminum

Answer 1

The elements should be listed in increasing order by mass in the Earth's crust as Aluminum, Iron, Silicon, and Oxygen, which corresponds to option b.

Step-by-step explanation:

The question asks to list a group of elements in increasing order based on their percent by mass in Earth's crust. Referring to the data provided, oxygen (O) is the most abundant element in the crust by weight, followed by silicon (Si), aluminum (Al), and then iron (Fe). Therefore, the correct order from least to greatest percent by mass in Earth's crust is iron, aluminum, silicon, and oxygen.

The correct answer to the question is thus option b. Aluminum, Iron, Silicon, Oxygen as it lists the elements in increasing order of their abundance in Earth's crust.