Analysis shows that nickel oxide has the formula 'Ni_(0.98) , O_(1.00)' What fraction of nickel exist as 'Ni^2+' and 'Ni^3+' ions?

Experimentally it was found that a metal oxide has formula M_(0.98)O . Metal M, is present as M^(2+) and M^(3+) in its oxide. Fraction of metal which exists as M^(3+) would be:

Experimentally it was found that a metal oxide has formula M_(0.98) O . Metal M present as M^(2+) and M^(3+) in its oxide. Fraction of the metal which exists as M^(3+) would be:

In crystalline solids, atoms or molecules are arranged in a regular and long range order fashion in a three dimensional pattern. Q. The fraction of Ni^(2+) and Ni^(3+) ions in Ni_(0.98)O_(1.00) is:

Sucrose decomposes in acid solution into glucose and fructose according to the first order rate law, with t_(1/2)=3.00 hours. What fraction of sample of sucrose remains after 8 hours?

A metal oxide hás thẻ formula 'Al_2 O_3' . It can be reduced by hydrogen to give free metai and water. 0.1596g of this metal oxide requires 6 mg of hydrogen for complete reduction. What is the atomic weight of metal?

Find the true statement/statements a) In a given period Delta_(i)H_(1) is the lowest for an alkali metal and highest for noble gas. b) Cs has the lowest and He has the highest Delta_(i)H_(1) among all elements. c) Lowest Delta_(i)H_(2) among the elements of third period is for Mg. d) The metal with the highest Delta_(i)H_(1) is mercury. e) Ni (II) compounds are thermodynamically more stable than Pt(II) compounds while Ni(IV) compound are less stable than Pt(IV) compounds.

The correct order of number of unpaired electrons in the ions : 'Cu^((2+)), Ni^((2+)), Fe^((3+))' and 'C r^((3+))' is