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

What is the EAN of nickel in Ni(CO)_4 ?

Oxidation number of nickel in Ni(CO)_(4) is

In the complex with formula MCl_3. 4H_2O , the coordination number of the metal M is six and there is no molecule of hydration in it. The volume of 0.1M AgNO_3 solution needed to precipitate the free chloride ions in 200 mL of 0.01 M solution of the complex is _________.

Equilibrium constant, K_c for the reaction, N_2(g) +3H_2(g) hArr 2NH_3(g) _(at 500 k is 0.061) At a particular time, the analysis shows that composition of the reaction mixtue is 3.0 mol L^(-1) N_2,2.0 mol L^(-1) H_2 .5 mol L^(-1) NH_3 Is the eaction at equilibrium ?If not in which direction does the reaction tend to proceed to reach equilibrium?

Coordination number of Ni in [Ni(C_2O_4)_3]^(4-) is

What is standard cell potential for the reaction Cell notation 3Ni(s) + 2AI^(3o+) (1M) rarr 3Ni^(2o+) (1M) + 1Al(s) if E_(Ni)^@ =-0.25 V and E_(AI)^0 =-1.66V?

Construct a cell consisting of Ni^(2+) |Ni half cell and H^+|H_2 (g. latm) | Pt half cell: Calculate emf of the cell if [Ni^(2+)]=0.1M[H^+]=0.05M and E_(NI)^0=-0.257 .

When 48250 C of electricity is passed through an aqueous solution of NiI_(2) (atomic mass of Ni= 58.8) , the mass of nickel metal deposited would be_________.

For what value of k, the points (0,0), (1, 3), (2, 4) and (k, 3) are con-cyclic :

In a solid ,oxide (O^(2-)) ions are arranged in ccp, cations (A^(3+)) occupy one -sixth of tetrahedral void and cations (B^(3+)) occupy one -third of the octahedral voids . What is the formula of the compound?