Single Choice

Which one of the following species is stable in aqueous solution

A$$MnO^{2-}_4$$
Correct Answer
B$$MnO^{3-}_4$$
C$$Cr^{2+}$$
D$$Cu^+$$

Solution

$$MnO^{3-}_4$$ is unstable in aqueous solution as $$+5$$ oxidation state of $$Mn$$ is unstable.

$$MnO^{2-}_4$$ is stable in aqueous solution as $$+6$$ oxidation state of $$Mn$$ is stable.

SIMILAR QUESTIONS

d - block and f - block Elements

Compounds of which of the following transition elements do not exhibit an oxidation state of +3?

d - block and f - block Elements

Mercurous ion is represented as:

d - block and f - block Elements

The element that acts as a good catalyst for several reactions has a atomic number:

d - block and f - block Elements

The element that usually does not show variable oxidation states is :

d - block and f - block Elements

Which of the following statements about $$Na_2O_2$$ is not correct?

d - block and f - block Elements

Which one of the following exhibits the largest number of oxidation states?

d - block and f - block Elements

In context with the transition elements, which of the following statements is incorrect?

d - block and f - block Elements

Iron exhibits +2 and +3 oxidation states. Which of the following statements about iron is incorrect?

d - block and f - block Elements

The correct statement(s) about $$\displaystyle Cr^{2+}$$ and $$\displaystyle Mn^{3+}$$ is(are): $$\displaystyle \mathrm {\left [ Atomic\ numbers\ of\ Cr = 24\ and\ Mn = 25 \right ]}$$

d - block and f - block Elements

The oxidation number of Mn in the product of alkaline oxidative fusion of $$MnO_{2}$$ is:

Contact Details