During the borax bead test with $CuSO _4$, a blue green colour of the bead was observed in oxidising flame due to the formation of
During the borax bead test with $CuSO _4$, a blue green colour of the bead was observed in oxidising flame due to the formation of
- [JEE MAIN 2023]
- A
$Cu _3 B _2$
- B
$Cu$
- C
$Cu \left( BO _2\right)_2$
- D
$CuO$
Similar Questions
Assertion : Atomic radius of gallium is higher than that of aluminium
Reason : The presence of additional $d-$ electron offer poor screening effect for the outer electrons from increased nuclear charge.
Assertion : Atomic radius of gallium is higher than that of aluminium
Reason : The presence of additional $d-$ electron offer poor screening effect for the outer electrons from increased nuclear charge.
- [AIIMS 2017]
$AlF_3$ is soluble in $HF$ only in presence of $KF.$ It is due to the formation of
$AlF_3$ is soluble in $HF$ only in presence of $KF.$ It is due to the formation of
- [NEET 2016]
The correct statements among $I$ to $III$ regarding group $13$ element oxides are,
$I$. Boron trioxide is acidic
$II$. Oxides of aluminium and gallium are amphoteric
$III$. Oxides of indium and thallium are basic
The correct statements among $I$ to $III$ regarding group $13$ element oxides are,
$I$. Boron trioxide is acidic
$II$. Oxides of aluminium and gallium are amphoteric
$III$. Oxides of indium and thallium are basic
- [JEE MAIN 2019]
The type of hybridisation of boron in diborane is
The type of hybridisation of boron in diborane is
The solubility of anhydrous $AlCl_3$ and hydrous $AlCl_3$ in diethyl ether are $S_1$ and $S_2$ respectively. Then
The solubility of anhydrous $AlCl_3$ and hydrous $AlCl_3$ in diethyl ether are $S_1$ and $S_2$ respectively. Then