The specific charge value of anode rays produced by _______ is the maximum.

Answer

To solve the question regarding the specific charge value of anode rays, we need to understand the concept of specific charge and the properties of anode rays.

### Step 1: Understand Specific Charge
The specific charge is defined as the ratio of the charge (e) to the mass (m) of a particle. It is expressed mathematically as:
\[ \text{Specific Charge} = \frac{e}{m} \]
Where:
- \( e \) is the charge of the particle.
- \( m \) is the mass of the particle.

### Step 2: Identify Anode Rays
Anode rays are streams of positively charged particles (cations) that are produced in a discharge tube. These rays are generated when a high voltage is applied, causing the gas in the tube to ionize.

### Step 3: Determine the Particles in Anode Rays
The particles in anode rays can vary depending on the gas used in the discharge tube. However, hydrogen ions (H⁺) are often considered because they have the least mass among all the cations.

### Step 4: Calculate the Specific Charge for Hydrogen Ions
The mass of a hydrogen ion (H⁺) is approximately \( 1.67 \times 10^{-27} \) kg. The charge of a proton (which is the same as the charge of H⁺) is approximately \( 1.6 \times 10^{-19} \) coulombs.

Now, we can calculate the specific charge for hydrogen ions:
\[ \text{Specific Charge of H}^+ = \frac{e}{m} = \frac{1.6 \times 10^{-19} \text{ C}}{1.67 \times 10^{-27} \text{ kg}} \]

### Step 5: Conclusion
Since hydrogen has the least mass among all the possible ions that can be produced in anode rays, the specific charge value of anode rays produced by hydrogen ions is the maximum.

### Final Answer
The specific charge value of anode rays produced by **hydrogen** is the maximum.

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