what is one of the major conclusions made from the study of line spectra of various elements? a the movement…
what is one of the major conclusions made from the study of line spectra of various elements? a the movement of electrons outside the nucleus b absorption and emission of energy is quantized c the presence of energy beyond the visible spectrum d the presence of electrons outside the nucleus of an atom
Answer
Brief Explanations:
- Option A: The study of line spectra does not directly conclude about the movement of electrons outside the nucleus in a general sense. Line spectra are more about energy changes.
- Option B: When studying line spectra of various elements, it was observed that atoms emit or absorb light (energy) at specific wavelengths. This implies that the absorption and emission of energy is quantized (occurs in discrete packets or quanta).
- Option C: While there is energy beyond the visible spectrum (like infrared, ultraviolet), the major conclusion from line - spectra studies is about quantization of energy rather than just the presence of non - visible energy.
- Option D: The presence of electrons outside the nucleus was known from other models (e.g., Rutherford's model) and is not the major conclusion from line - spectra studies. Line spectra focus on energy changes related to electrons.
Answer:
B. absorption and emission of energy is quantized