Explain why $Cu ^{+}$ ion is not stable in aqueous solutions?
Explain why $Cu ^{+}$ ion is not stable in aqueous solutions?
In an aqueous medium, $Cu ^{2+}$ is more stable than $Cu ^{+}$. This is because although energy is required to remove one electron from $Cu ^{+}$ to $Cu ^{2+}$, high hydration energy of $Cu ^{2+}$ compensates for it. Therefore, $Cu ^{+}$ ion in an aqueous solution is unstable. It disproportionates to give $Cu ^{2+}$ and $Cu$.
$2Cu_{(aq)}^ + \to Cu_{(aq)}^{2 + } + C{u_{(s)}}$
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$(A)$ The electronic configuration of $Cr$ is $[ Ar ] 3 d ^{5}$ $4 s^{1}$.
$(B)$ The magnetic quantum number may have a negative value.
$(C)$ In the ground state of an atom, the orbitals are filled in order of their increasing energies.
$(D)$ The total number of nodes are given by $n-2$.
Choose the most appropriate answer from the options given below ....
Which of the following statements are correct?
$(A)$ The electronic configuration of $Cr$ is $[ Ar ] 3 d ^{5}$ $4 s^{1}$.
$(B)$ The magnetic quantum number may have a negative value.
$(C)$ In the ground state of an atom, the orbitals are filled in order of their increasing energies.
$(D)$ The total number of nodes are given by $n-2$.
Choose the most appropriate answer from the options given below ....
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