Which of the following statements about the unreactive nature of noble gases is (are) true ?

Options

A. The inner shells of noble gas atoms are filled to capacity .
B. Noble gas atoms cannot give up electrons to or accept electrons from other atoms .
C. The valence shells of the atoms of noble gases are filled to capacity .
D. None of these

Answer

To determine which statements about the unreactive nature of noble gases are true, we need to analyze each statement carefully. Here’s a step-by-step solution:

### Step 1: Understand the Nature of Noble Gases
Noble gases are known for their lack of reactivity. This is primarily due to their electron configuration, which is stable.

### Step 2: Analyze Each Statement

**Statement 1:** "The inner shell of noble gas atoms are filled to capacity."
- This statement is true. Noble gases have completely filled inner shells. However, while this is a true statement, it does not directly explain their unreactive nature.

**Statement 2:** "Noble gas atoms cannot give up electrons or accept electrons from other atoms."
- This statement is true. Noble gases have a complete outer shell, which means they do not need to gain or lose electrons to achieve stability. This is a key reason for their unreactive nature.

**Statement 3:** "The valence shell of the atom of noble gas is filled to capacity."
- This statement is true. The outermost shell (valence shell) of noble gases is completely filled with electrons, which contributes to their stability and unreactive nature.

**Statement 4:** "None of these."
- This statement is false because we have identified true statements in the previous options.

### Conclusion
The true statements regarding the unreactive nature of noble gases are:
- Statement 2: Noble gas atoms cannot give up electrons or accept electrons from other atoms.
- Statement 3: The valence shell of the atom of noble gas is filled to capacity.

### Final Answer
The correct options are Statement 2 and Statement 3.

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