Question

Which of the following chemical compound contains a maximum number of Hydrogen atoms?

• A. ${\mathrm{H}}_2\mathrm{O}$
• B. ${\mathrm{CH}}_4$
• C. ${\mathrm{H}}_2{\mathrm{O}}_2$
• D. ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$

Answer 1

The correct option is D

${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$

Explanation for correct option:

(D) ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$

• Copper Sulfate Pentahydrate is the most common sulfate salt of copper.
• Copper sulfate$\left(\mathrm{II}\right)$ pentahydrate $\left({\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}\right)$ is made up of one copper, one sulfur, nine oxygen atoms as well as ten hydrogen atoms.

Explanation for incorrect options:

(A) Water $\left({\mathrm{H}}_2\mathrm{O}\right)$ molecule is made up of two hydrogen atoms and an oxygen atom.

(B) Methane $\left({\mathrm{CH}}_4\right)$ molecule is made up of one carbon atom and four hydrogen atoms.

(C) Hydrogen peroxide $\left({\mathrm{H}}_2{\mathrm{O}}_2\right)$ is made up of two hydrogen atoms and two oxygen atoms.

Hence, the correct option is D i.e. ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$.