2016年11月29日 · Cr(CO${_3}$)${}_3$ This is an ionic compound. Chromium is a transition metal cation and CO${_3}$ is an anion with a charge of 2-, as said in my chemistry textbook. And …

2020年10月6日 · In principle it could be obtained according to $$\ce{2 Cr^{3+} + 3 CO3^{2-} -> Cr2(CO3)3}$$ But like with the aluminum and ferric carbonates, the chromium carbonate is …

2018年4月17日 · The chloride-ligands exchange for water ligands like $\ce{[Cr(H2O)5Cl]Cl2 * H2O}$ which is blue-green. And in the end the $\ce{[Cr(H2O)3Cl3]*(H2O)3}$ is green. Some …

2020年11月21日 · The complex of $\ce{Cr}$ with three oxalate ions must compensate the charges of the cobalt complex (+ $2$ or + $3$). So the charge of the chromium complex has …

2017年9月24日 · 1.10 * 10^(24) The first thing that you need to do here is to convert the mass of aluminium carbonate to moles by using the compound's molar mass. In this case, you know …

2018年3月17日 · 1) Cr3+ has 3 electrons in 3d orbital. Obviously, it is a tetrahedral splitting, so configuration will be eg2 t2g1 which shows it is paramagnetic. 2) Here you need to know that …

2021年5月26日 · According to the above rules, the oxidation state of cobalt in the complex can be written in two ways - as (III) or (3+). Similarly the chloride ions can be named in two different …

2016年2月12日 · Hence, $\ce{Mn^3+}$ is a good oxidising agent. The hydration enthalpy of $\ce{Cr^3+}$ is anomalously large (for a 3+ ion) because there is a large ligand-field …

2018年5月15日 · It suggests that $\ce{Fe^3+}$ should be the most stable, but the answer key given for increasing stability instead is $\ce{Co^3+ < Fe^3+ < Cr^3+ < Sc^3+}$. This seems to …

2022年1月9日 · 3 $\begingroup$ Then better to express it particularly as strong/weak oxidant/reductant. As another meanings can be thermodynamic or kinetic stability toward …