Question

What percentage of Earth’s mass is sulfur?

(a) 3%

(b) 5%

(c) 0.032%

(d) 2%

The question was posed to me in semester exam.

Question is taken from P-Block Elements topic in section P-Block Elements of Chemistry – Class 12

Answer 1

Correct option is (a) 3%

To explain: Factually, 3% of Earth’s total mass is comprised of elemental sulfur. Carbon makes u about 0.032% of Earth’s crust and outer mantle. On the other hand, iron and magnesium account for 5% and 2% of Earth’s crust, respectively.