Question

For each of the following complexes, identify a) central metal atom/ion and b) coordination number
(i) k4[ni(cn)4​

Answer 1

Answer:

a) central metal atom/ion - In a coordination entity, the atom/ion to which a fixed number of ions/groups are bound in a definite geometrical arrangement around it, is called the central atom or ion. For example, the central atom/ion in the coordination entities: [NiCl2(H2O)4], [CoCl(NH3)5]2+ and [Fe(CN)6]3– are Ni2+, Co3+ and Fe3+, respectively.

b)coordination number - k4 [ni(cn)4 - The complex has four monodentate ligands attached to the central Ni atom. Hence, the coordination number of the complex is four.

hope it helps please mark me as brainliest

Answer 2

Answer:

Consider the compound K4[Ni(CN)4]

Let oxidation state of Nickel be x

(1×4)+x+(4×−1)=0

⇒ 4+x−4=0

⇒ x=0

Hence, in the given compound, the oxidation state of Nickel is zero.

l hope it will help u ☺️✌️☺️