Question

Arrange the following elements in increasing order of their mass (weight) percentage in the Bulk earth: A. Iron B. Silicon C. Oxygen D. Magnesium E. Nickel

• A. A, C, B, D, E
• B. D, E, B, C, A
• C. E, B, C, D, A
• D. E, D, B, C, A

Hint:

Remember that Iron is the most abundant element in the bulk Earth by mass, followed by Oxygen, Silicon, and Magnesium.

Answer 1

The Correct Option is C

Step 1: Concept
Elemental Abundances in the Earth's Bulk Composition.

Step 2: Meaning
The mass percentage of elements in the Earth's bulk composition refers to their relative abundance by weight.

Step 3: Analysis
The approximate mass percentages in the bulk Earth are: Iron $\approx$32%, Oxygen $\approx$30%, Silicon $\approx$15%, Magnesium $\approx$14%, Nickel $\approx$2%. In increasing order: Nickel (E) $<$ Silicon (B) $<$ Oxygen (C) $<$ Magnesium (D) $<$ Iron (A).

Step 4: Conclusion
The correct increasing order by mass percentage is: E, B, C, D, A. Final Answer: (C)