Identify the correct statement.

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(C) $Yb^{2+}$ has the electronic configuration $[Xe] 4f^{14}$.Since it has a stable $f^{14}$ configuration,it prefers to lose one electron to form $Yb

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$CrO$ is basic.

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(C) $Yb^{2+}$ has the electronic configuration $[Xe] 4f^{14}$.Since it has a stable $f^{14}$ configuration,it prefers to lose one electron to form $Yb^{3+}$,thus acting as a reductant.$Lu^{3+}$ has the electronic configuration $[Xe] 4f^{14}$,which is fully filled,making it diamagnetic.$CrO$ is a basic oxide because chromium is in a low oxidation state of $+2$.Brass is an alloy of $Cu$ and $Zn$,whereas Bronze is an alloy of $Cu$ and $Sn$.

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