Question

Which of the following does not contain an s-block element?

• A. Epsom salt
• B. Microcosmic salt
• C. Baking soda
• D. Mohr's salt

Answer 1

The correct option is D Mohr's salt

Epsom salt (magnesium sulfate):- $MgS{O}_4$

Microcosmic salt:-$\left(N{H}_4\right)NaHP{O}_4$

Baking soda :-$NaHC{O}_3$

Mohr's salt:-$\left(N{H}_4{)}_{2}Fe\right(S{O}_4{)}_2.6H_{2}O$

As we can see from the chemical formulas of these salts, Mohr's salt does not contain an s-block element.

Hence, the correct option is $\text{D}$