The fraction of octahedral voids filled by `Al^(3+)` ion in `Al_(2)O_(3)(r_(Al^(3o+))//r_(O^(2-)) = 0.43)` is

Aluminium oxide, Al_(2)O_(3) is

Al_(2)O_(3) reacts with

What is the nature of Al_(2)O_(3) and B_(2)O_(3) ?

What is the nature of Al_(2)O_(3) and B_(2)O_(3) ?

Exothermic reaction among the following is A) Cr_(2) O_(3) + 2All to 2 Cr + Al_(2) O_(3) B) Fe_(2) O_(3) + 2Al to 2 Fe + Al_(2) O_(3) C) 3 Mn_(3) O_(4) + 8 Al to 4 Al_(2) O_(3) + 9 Mn

What is the enthalpy change for the given reaction, if enthalpies of formation of Al_(2)O_(3) and Fe_(2)O_(3) are -"1670 kJ mol"^(-1) and -"834 kJ mol"^(-1) respectively? Fe_(2)O_(3) +2Al rarr Al_(2)O_(3)+2Fe

What is the enthalpy change for the given reaction, if enthalpies of formation of Al_(2)O_(3) and Fe_(2)O_(3) are -"1670 kJ mol"^(-1) and -"834 kJ mol"^(-1) respectively? Fe_(2)O_(3) +2Al rarr Al_(2)O_(3)+2Fe

Balance the follwowing equations. 1) Al(OH)_(3)rarr Al_(2)O_(3)+H_(2)O

The following reaction is an example of: Fe_2O_3+2Al to Al_2O_3+2Fe