`Fe^(2+)` gives blue coloue, called(a)____ with (b)___white `Fe^(2+)` gives blue coloue, called(c)____ with (d)____.

Answer

To solve the question, we will break down the information provided in the video transcript step by step.

### Step 1: Identify the blue color associated with Fe²⁺
- The first part of the question asks what blue color is given by Fe²⁺. According to the transcript, when Fe²⁺ forms a complex with cyanide ions (CN⁻), it produces a blue color known as **Turnbull's Blue**.

### Step 2: Identify the complex formed with Fe²⁺
- The complex formed with Fe²⁺ and cyanide is represented as **K₂[Fe(CN)₆]**. This indicates that the blue color (Turnbull's Blue) is associated with the complex ion formed by Fe²⁺ and cyanide.

### Step 3: Identify the blue color associated with Fe³⁺
- The transcript also mentions that when Fe³⁺ is involved, it gives a blue color known as **Prussian Blue**. This is important to note as it distinguishes the colors associated with different oxidation states of iron.

### Step 4: Identify the complex formed with Fe³⁺
- The complex formed with Fe³⁺ and cyanide is represented as **K₃[Fe(CN)₆]**. This complex is responsible for the blue color known as Prussian Blue.

### Final Answers:
- (a) Turnbull's Blue
- (b) K₂[Fe(CN)₆]
- (c) Prussian Blue
- (d) K₃[Fe(CN)₆]

### Summary of the Solution:
1. **(a)** Turnbull's Blue
2. **(b)** K₂[Fe(CN)₆]
3. **(c)** Prussian Blue
4. **(d)** K₃[Fe(CN)₆]