Which of the following oxides of manganese is amphoteric ?
A.
$$Mn{O_2}$$
B.
$$M{n_2}{O_3}$$
C.
$$M{n_2}{O_7}$$
D.
$$MnO$$
Answer :
$$Mn{O_2}$$
Solution :
The more the oxidation state, the more is the acid character, $$MnO,M{n_2}{O_3}$$ are basic, $$Mn{O_2}$$ is amphoteric and $$M{n_2}{O_7}$$ is acidic.
Releted MCQ Question on Inorganic Chemistry >> D and F Block Elements
Releted Question 1
When same amount of zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide, the ratio of volume of hydrogen evolved is