O[Cr(Ox)_(3)]^(3-)

[Co(Cr_(2)O_(4))_(3)]^(3-) is a

What is the co-ordination number of Cr in K_(3)[Cr("ox")_(3)] ?

The co-ordination number of Cr in [Cr(NH_(3))_(3)(H_(2)O)_(3)]Cl_(3) is

In the reaction the stoichiometry coefficients of Cr_(2)O_(7)^(2-) , NO_2^(-) and H^(+) respectively are Cr_(2)O_(7)^(2-) +NO_(2)^(-) +H^(+) rarr Cr^(3+) +NO_(3)^(-) +H_(2)O

In a reaction, Cr_(2)O_(7)^(2-) is reduced to Cr^(3+) . What is concentration of 0.1M K_(2)Cr_(2)O_(7) in equivalent per litre? Cr_(2)O_(7)^(2-)+14H^(+)+6erarr2Cr^(3+)+7H_(2)O