The specific activity of radius is nearly-

Options

A. 1Bq
B. 1Ci
C. `3.7xx10^(10) Ci`
D. 1 mCi

Answer

To solve the question regarding the specific activity of radium, we will follow these steps:

### Step 1: Understand Specific Activity
Specific activity is defined as the activity (rate of decay) of a radioactive substance per unit mass. It is usually expressed in curies (Ci) or becquerels (Bq) per gram.

### Step 2: Know the Standard Value
For radium, there is a well-known standard value for its specific activity. The specific activity of radium is approximately 1 curie per gram.

### Step 3: Identify the Answer
Given that the specific activity of radium is approximately 1 curie, we can conclude that the answer to the question is:

**Answer: 1 Curie**

### Step 4: Confirm the Result
This value is widely accepted in nuclear physics and is a standard reference point for the specific activity of radium.

### Final Answer
The specific activity of radium is nearly **1 Curie**.

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