Which alkaline earth metal is used in treatment of cancer :-

Options

A. Barium
B. Strontium
C. Radium
D. Calcium

Answer

To solve the question "Which alkaline earth metal is used in the treatment of cancer?", we will analyze the options provided and focus on the properties of the alkaline earth metals.

### Step 1: Identify the alkaline earth metals
Alkaline earth metals are found in Group 2 of the periodic table. The elements in this group include:
- Beryllium (Be)
- Magnesium (Mg)
- Calcium (Ca)
- Strontium (Sr)
- Barium (Ba)
- Radium (Ra)

### Step 2: Analyze the options given
The options provided in the question are:
- A) Barium (Ba)
- B) Strontium (Sr)
- C) Radium (Ra)
- D) Calcium (Ca)

### Step 3: Research the medical applications of each metal
- **Barium**: Primarily used in medical imaging (barium swallow, barium enema) but not for cancer treatment.
- **Strontium**: Has some applications in bone health but is not primarily used for cancer treatment.
- **Calcium**: Important for bone health and metabolism but not used directly in cancer treatment.
- **Radium**: Known for its radioactive properties. Historically, radium was used in radiotherapy for cancer treatment due to its ability to emit radiation that can target and kill cancer cells.

### Step 4: Conclusion
Based on the analysis, the alkaline earth metal that is used in the treatment of cancer is **Radium (Ra)**.

### Final Answer
The correct answer is **C) Radium**.

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