Why does the reaction \eqref{rxn:R1Q} take place, but the reaction \eqref{rxn:R2Q} does not?
$$
\begin{align}
\ce{HF(aq) + KF(aq) &-> KHF2(aq)}\label{rxn:R1Q}\tag{R1} \\
\ce{HCl(aq) + KCl(aq) &-> KHCl2}\label{rxn:R2Q}\tag{R2}
\end{align}
$$
I found that $\ce{[HF2]-}$ forms due to hydrogen bonding...
According to Crystal Field theory(CFT), complexes with stronger ligands must absorb light with higher frequency hence would transmit corresponding complementary colour.
The colour of $(\ce{[Ni(H2O)2(en)2]^2+})$ blue - purple and colour of $(\ce{[Ni(H2O)6]^2+})$ is green, whereas the colour of $...
According to Crystal Field theory(CFT), complexes with stronger ligands must absorb light with higher frequency hence would transmit corresponding complementary colour.
The colour of $(\ce{[Ni(H2O)2(en)2]^2+})$ blue - purple and colour of $(\ce{[Ni(H2O)6]^2+})$ is green, whereas the colour of $...
The Periodic Table
The Periodic Table