Bohr atomic model can explain

Options

A. the spectrum of hydrogen atom only
B. the spectrum of an atom or ion containing one electron only
C. the epectrum of hydrogen molecule
D. the solar spectrum.

Explanation

**Step-by-Step Text Solution:**

1. **Understanding the Bohr Atomic Model:**
- The Bohr atomic model, proposed by Niels Bohr in 1913, describes the structure of the atom, particularly focusing on the behavior of electrons in hydrogen-like atoms.

2. **Identifying Hydrogen-like Species:**
- Hydrogen-like species are atoms or ions that have only one electron. Examples include:
- Hydrogen (H)
- Helium ion (He⁺)
- Lithium di-positive ion (Li²⁺)
- These species can be analyzed using the Bohr model because they exhibit similar spectral characteristics.

3. **Analyzing the Options:**
- **Option A:** "The spectrum of hydrogen atom only."
- This option is too narrow since the Bohr model also applies to other hydrogen-like species.
- **Option B:** "The spectrum of an atom or ion containing one electron only."
- This is correct as the Bohr model can explain the spectra of hydrogen and other one-electron species.
- **Option C:** "The spectrum of Hydrogen molecule."
- Incorrect, as H₂ has two electrons and the Bohr model does not apply to multi-electron systems.
- **Option D:** "The solar spectrum."
- Incorrect, as the solar spectrum involves many elements and complex interactions that the Bohr model cannot explain.

4. **Conclusion:**
- The best-suited option is **B**, as the Bohr atomic model successfully explains the spectrum of atoms or ions that contain only one electron.