All $Zn( +II)$ compounds are white because
$Zn^{2+}$ has a $d^{10}$ configuration and the $d-$ subshell is full
$Zn^{2+}$ shows $d-d$ transition
$Zn^{2+}$ has no electron in the $4s-$ subshell
$Zn$ is not a transition element
Predict which of the following will be coloured in aqueous solution? $Ti ^{3+}, V ^{3+}, Cu ^{+},$ $Sc ^{3+}, Mn ^{2+}, Fe ^{3+}$ and $Co ^{2+} .$ Give reasons for each.
Given below are two statements, one is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A:$ The spin only magnetic moment value for $\left[ Fe ( CN )_6\right]^{3-}$ is $1.74 BM$, whereas for $\left[ Fe \left( H _2 O \right)_6\right]^{3+}$ is $5.92\,BM$.
Reason $R :$ In both complexes, $Fe$ is present in +3 oxidation state.
In the light of the above statements, choose the correct answer from the options given below:
Which of the following compounds is not colored yellow ?
Explain trends in $M^{2+}/M$ standard electrode potentials.
Brass is an alloy of