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The pair(s) of reagents that yield param...

The pair(s) of reagents that yield paramagnetic species is/are

A

`Na` and excess of `NH_3`

B

`K` and excess of `O_2`

C

`Cu` and dilute `HNO_3`

D

`O_2` and 2-ethylanthraquinol

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
(a) `Na +(x + y) NH_(3) rarr Na^(oplus) (NH_(3))_(x) + e^(Ө) (NH_(3)_(y) rarr` Paramagnetic
(b) `K + excess O_(2) rarr KO_(2) ("Superoxide") rarr` Paramagnetic
(c) `3 Cu + 8HNO_(3) rarr 3 Cu(NO_(3))_(2) + 2NO + 4 H_(2) O rarr` Paramagnetic
(d) .
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