If internuclear distance between `A` atoms in `A_(2)` is `10 Å` and between `B` atoms in `B_(2)` is `6Å`, then calculate internuclear distance between `A` and `B` in `Å` [Electronegativity difference between `A` and `B` has negligible value].

Explanation

To calculate the internuclear distance between atoms A and B in the compound AB, we can follow these steps:

### Step 1: Understand the given data
We have the following information:
- The internuclear distance between A atoms in A2 is 10 Å.
- The internuclear distance between B atoms in B2 is 6 Å.
- The electronegativity difference between A and B is negligible.

### Step 2: Calculate the radius of A atom
The internuclear distance in A2 (10 Å) represents the distance between the centers of two A atoms. Therefore, the radius of one A atom can be calculated as:
\[ \text{Radius of A} = \frac{\text{Internuclear distance in } A_2}{2} = \frac{10 \, \text{Å}}{2} = 5 \, \text{Å} \]

### Step 3: Calculate the radius of B atom
Similarly, the internuclear distance in B2 (6 Å) represents the distance between the centers of two B atoms. Thus, the radius of one B atom can be calculated as:
\[ \text{Radius of B} = \frac{\text{Internuclear distance in } B_2}{2} = \frac{6 \, \text{Å}}{2} = 3 \, \text{Å} \]

### Step 4: Calculate the internuclear distance between A and B
The internuclear distance between A and B in the compound AB is the sum of the radii of A and B:
\[ \text{Internuclear distance between A and B} = \text{Radius of A} + \text{Radius of B} = 5 \, \text{Å} + 3 \, \text{Å} = 8 \, \text{Å} \]

### Final Answer
The internuclear distance between A and B is **8 Å**.

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