In which of the following processes the energy is not being absorbed? 

Options

A. `Na(g) to Na^(-)(g)`
B. `Na^(+)to  Na^(+)(aq)`
C. `A^(+)(g) + B^(-)g) to AB(s)`
D. `N(g) to N^(+) (g)`

Answer

To determine in which process energy is not being absorbed, we need to analyze the options provided in the question. Here is a step-by-step solution:

### Step 1: Understand the Processes
We need to evaluate each process to see if energy is absorbed or released. Generally, energy is absorbed during endothermic processes and released during exothermic processes.

### Step 2: Analyze Each Process
1. **Process 1: Adding an Electron to a Gas Atom**
- When an electron is added to a gas atom, energy is typically released. This is because the atom is becoming more stable by gaining an electron. Therefore, energy is not absorbed in this process.

2. **Process 2: Gas to Liquid Transition**
- When a gas condenses into a liquid, energy is released in the form of heat. This is an exothermic process, indicating that energy is not absorbed.

3. **Process 3: Formation of a Chemical Bond (AB)**
- The formation of a chemical bond releases energy as the atoms come together to form a more stable molecule. Thus, energy is not absorbed in this process.

4. **Process 4: Adding an Electron from N to N**
- In this case, energy is required to add an electron, meaning energy is absorbed. This is an endothermic process.

### Step 3: Conclusion
From the analysis, we find that in Processes 1, 2, and 3, energy is not being absorbed; instead, it is released. Therefore, these processes are the correct answers.

### Final Answer
The processes in which energy is not being absorbed are:
- Process 1: Adding an Electron to a Gas Atom
- Process 2: Gas to Liquid Transition
- Process 3: Formation of a Chemical Bond (AB)

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