To determine the number of protons, electrons, and neutrons for a hydrogen atom with a mass of 2, follow these steps:
1. Identify the number of protons in hydrogen: Hydrogen has an atomic number of 1, which means it has 1 proton.
2. Determine the number of electrons in hydrogen: In a neutral hydrogen atom, the number of electrons is equal to the number of protons. Therefore, hydrogen has 1 electron.
3. Calculate the number of neutrons: The number of neutrons can be found by subtracting the number of protons from the mass number. The mass number of hydrogen in this case is given as 2.
[tex]\[
\text{Number of neutrons} = \text{Mass number} - \text{Number of protons} = 2 - 1 = 1
\][/tex]
Therefore, the number of protons, electrons, and neutrons in hydrogen with a mass of 2 is:
```
1, 1, 1
```
