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

A

$$Cr^{2+}$$ is a reducing agent

B

$$Mn^{3+}$$ is an oxidizing agent

C

Both $$Cr^{2+}$$ and $$Mn^{3+}$$ exhibit $$d^4$$ electronic configuration

D

When $$Cr^{2+}$$ is used as a reducing agent, the chromium ion attains $$d^5$$ electronic configuration