Scelta multipla
Which of the following elements is found in period 3 of the periodic table?
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2. Atoms & Elements
Periodic Table: Representative Elements & Transition Metals
Scelta multipla
Which of the following lists contains the four most abundant elements in Earth's crust?
A
O, N, C, H
B
O, Si, Al, Fe
C
Si, Fe, Ca, Na
D
H, He, O, C
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Understand that the problem asks for the four most abundant elements in Earth's crust, which is the outermost solid layer of the Earth.
Recall that Earth's crust is primarily composed of oxygen and several metals, with oxygen being the most abundant element by weight.
Identify the common elements in the crust: Oxygen (O), Silicon (Si), Aluminum (Al), and Iron (Fe) are known to be the top four most abundant elements.
Compare the given options to see which list contains these four elements: O, Si, Al, and Fe.
Conclude that the list containing O, Si, Al, and Fe correctly represents the four most abundant elements in Earth's crust.
