The highest occupied energy level of the group 2 elements radius is `7s^(2)`, which of these statements is likely to be incorrect?

Options

A. The element will show an oxidation state +II in all its compounds
B. The element will decomposes water, liberating hydrogen
C. Hydroxide of the elements will be amphoteric
D. Metal carbonate is relatively stable at higher temperature than calcium carbonate

Answer

To determine which statement is likely to be incorrect regarding the group 2 elements with the highest occupied energy level of `7s^2`, we will analyze each statement one by one.

### Step 1: Identify the Group 2 Elements
Group 2 elements, also known as alkaline earth metals, include:
- Beryllium (Be)
- Magnesium (Mg)
- Calcium (Ca)
- Strontium (Sr)
- Barium (Ba)
- Radium (Ra)

The highest occupied energy level for the group 2 elements is `7s^2`, which indicates we are particularly considering Radium (Ra).

### Step 2: Analyze Each Statement
1. **Statement 1**: The element will show an oxidation state of +2 in all its compounds.
- **Analysis**: Group 2 elements typically exhibit a +2 oxidation state in their compounds. This statement is correct.

2. **Statement 2**: The element will decompose water liberating hydrogen.
- **Analysis**: Except for Beryllium, other alkaline earth metals react with water to liberate hydrogen gas. This statement is also correct for the group 2 elements, including Radium.

3. **Statement 3**: Hydroxide of the element will be amphoteric.
- **Analysis**: Hydroxides of alkaline earth metals are generally basic, not amphoteric. This statement is incorrect.

4. **Statement 4**: Metal carbonate is relatively stable at higher temperature than calcium carbonate.
- **Analysis**: The stability of carbonates increases down the group. Therefore, Radium carbonate would be more stable than Calcium carbonate at higher temperatures. This statement is correct.

### Conclusion
The statement that is likely to be incorrect is **Statement 3**: "Hydroxide of the element will be amphoteric."

### Final Answer
The incorrect statement is: **Hydroxide of the element will be amphoteric.**

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