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The correct s...

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The correct statement(s) about Cr2+ and Mn3+is(are) \lbrack Atomic numbers of Cr 24 and Mn 25\rbrack (A) Cr2\ast is a reducing agent (B) Mn3+ is an oxidizing agent (C) Both Cr2+ and Mn3+ exhibit d4 electronic configuration (D) When Cr2+ is used as a reducing agent, the chromium ion attains d5 electronic configuration

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Q. The correct statements (s) about

C r^{2 +}

M n^{3 +}

is (are) [Atomic numbers of Cr = 24 and Mn = 25]

C r^{2 +}

is reducing and

M n^{3 +}

is oxidising. Reason:

C r^{2 +}

M n^{3 +}

d^{4}

Q. The correct statement(s) about

C r^{2 +}

M n^{3 +}

is(are)
[Atomic numbers of

C r = 24

M n = 25

]

Q. Explain each of the following observations:
(i) With the same d-orbital configuration

(d^{4}), C r^{2 +}

is a reducing agent while

M n^{3 +}

is an oxidising agent.
(ii) Actinoids exhibit a much larger number of oxidation states than lanthanoids.
(iii) There is hardly any increase in atomic size with increasing atomic numbers in a series of transition metals.

Q. The correct statement(s) about

C r^{2 +}

M n^{3 +}

[A t o m i c n u m b e r s o f C r = 24 a n d M n = 25]

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