The isotope of hydrogen that contains the same number of protons and neutrons in its nucleus is called

Options

A. protium
B. deutrium
C. tritium
D. Electro magnetic radiations make up the cathode rays

Answer

To solve the question about the isotope of hydrogen that contains the same number of protons and neutrons in its nucleus, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Isotopes**:
- Isotopes are variants of a chemical element that have the same number of protons but different numbers of neutrons.

2. **Identifying Hydrogen Isotopes**:
- Hydrogen has three isotopes: Protium (¹H), Deuterium (²H), and Tritium (³H).
- Protium has 1 proton and 0 neutrons.
- Deuterium has 1 proton and 1 neutron.
- Tritium has 1 proton and 2 neutrons.

3. **Finding the Isotope with Equal Protons and Neutrons**:
- We need to find the isotope where the number of protons equals the number of neutrons.
- From the isotopes listed:
- Protium: 1 proton, 0 neutrons (not equal)
- Deuterium: 1 proton, 1 neutron (equal)
- Tritium: 1 proton, 2 neutrons (not equal)

4. **Conclusion**:
- The isotope of hydrogen that contains the same number of protons and neutrons is **Deuterium (²H)**.

### Final Answer:
The isotope of hydrogen that contains the same number of protons and neutrons in its nucleus is called **Deuterium**.

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