The secondary valency of chromium in `[Cr(en)_(3)]Cl_(3)` is

The oxidation state of chromium is [Cr(PPh_(3))_(3)] is

The sum of primary and secondary valencies of chromium in the complex CrBr_(3).6NH_(3) is .

The sum of primary and secondary valencies of chromium in the complex CrBr_(3).6NH_(3) is .

The oxidation state of chromium is [Cr(PPh_(3))_(3)(CO)_(3)] is

The coordination number of chromium in [Cr(en)_2(NH_3) (NCS)] is ................ .

The hybridization of Cr in [Cr(en)_(3)]^(3+) is

What is the primary and secondary valency of chromium in the complex ion, dichlorodioxalatochromium(III) ?