The possible sum of the number of neutrons and protons in the isotope of hydrogen is :

Options

A. 6
B. 5
C. 4
D. 3

Explanation

To solve the question regarding the possible sum of the number of neutrons and protons in the isotopes of hydrogen, we can follow these steps:

### Step 1: Understand Isotopes
Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons. For hydrogen, the isotopes are:
- **Protium (H-1)**: 1 proton, 0 neutrons
- **Deuterium (H-2)**: 1 proton, 1 neutron
- **Tritium (H-3)**: 1 proton, 2 neutrons

### Step 2: Identify the Number of Protons and Neutrons
For each isotope of hydrogen, we can list the number of protons and neutrons:
- **Protium (H-1)**:
- Protons = 1
- Neutrons = 0
- **Deuterium (H-2)**:
- Protons = 1
- Neutrons = 1
- **Tritium (H-3)**:
- Protons = 1
- Neutrons = 2

### Step 3: Calculate the Sum of Protons and Neutrons
Now, we calculate the sum of protons and neutrons for each isotope:
- For Protium:
- Sum = Protons + Neutrons = 1 + 0 = 1
- For Deuterium:
- Sum = Protons + Neutrons = 1 + 1 = 2
- For Tritium:
- Sum = Protons + Neutrons = 1 + 2 = 3

### Step 4: Find the Total Sum of All Isotopes
Now, we add up the sums from all three isotopes:
- Total Sum = Sum from Protium + Sum from Deuterium + Sum from Tritium
- Total Sum = 1 + 2 + 3 = 6

### Conclusion
The possible sum of the number of neutrons and protons in the isotopes of hydrogen is **6**.