McqMate
| Q. |
Which of the following is the most common element in the Universe? |
| A. | Nitrogen |
| B. | Oxygen |
| C. | Hydrogen |
| D. | Carbon |
| Answer» C. Hydrogen | |
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Explanation: Hydrogen is the most abundant element in the Universe; helium is second. However, after this, the rank of abundance does not continue to correspond to the atomicnumber; oxygen has abundance rank 3, but atomic number 8. All others are substantially less common. |
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