Q
Which of the following compounds has the most atoms?
RRB Group D, 23-Oct-18 S-1
2018
✓ Answer:
A
H2SO4
Among the compounds listed, H2SO4 (sulfuric acid) has the most atoms. It consists of 2 hydrogen (H) atoms, 1 sulfur (S) atom, and 4 oxygen (O) atoms, totaling 7 atoms. In comparison, CO2 has 3 atoms, Ca(OH)2 has 5 atoms, and HNO2 has 5 atoms, making sulfuric acid the compound with the highest atom count.
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