WJEC Emission and Absorption Spectroscopy Questions PDF

WJEC Okay, here are 10 more multiple-choice questions, focusing on slightly different aspects of emission and absorption spectroscopy, still based solely on the provided WJEC documents: Questions 1. Which of the following series in the hydrogen emission spectrum lies in the ultraviolet region? * (...

WJEC Okay, here are 10 more multiple-choice questions, focusing on slightly different aspects of emission and absorption spectroscopy, still based solely on the provided WJEC documents: Questions 1. Which of the following series in the hydrogen emission spectrum lies in the ultraviolet region? * (A) Lyman * (B) Balmer * (C) Paschen * (D) All of the above 2. The Balmer series in the hydrogen emission spectrum corresponds to electron transitions that end in which energy level? * (A) n = 1 * (B) n = 2 * (C) n = 3 * (D) n = ∞ 3. The Paschen series corresponds with electron transitions that emit radiation in which region of the electromagnetic spectrum? * (A) Ultraviolet * (B) Visible * (C) Infrared * (D) X-ray 4. As electrons fall to lower energy level, the frequency of electromagnetic radiation emitted __________. * (A) Increases * (B) Decreases * (C) Remains the same * (D) Becomes zero 5. Which of the following statements is correct regarding the energy levels in an atom? * (A) Energy levels are evenly spaced. * (B) The energy difference between levels increases with increasing distance from the nucleus.  * (C) The energy difference between levels decreases with increasing distance from the nucleus. * (D) There are a nite number of energy levels. 6. What is meant by the "ground state" of an electron? * (A) The highest energy level an electron can occupy. * (B) The energy level closest to the nucleus. * (C) The energy level furthest from the nucleus. * (D) The lowest energy level that an electron originally came from. 7. Which form of energy can cause electron to be promoted to a higher energy level. * (A) Heat * (B) Electricity * (C) Both A and B * (D) Neither A or B 8. Emission spectra appear as... * (A) Coloured lines on a dark background. * (B) Dark lines on a coloured background. * (C) A continuous spectrum of colours. * (D) A spectrum with only one colour. 9. Absorption spectra appear as... * (A) Coloured lines on a dark background. * (B) Dark lines on a coloured background. * (C) A continuous spectrum of colours. * (D) A spectrum with only one colour. 10. The rst ionisation energy of hydrogen can be determined from the convergence limit of which series? * (A) Lyman * (B) Balmer * (C) Paschen * (D) Any of the above fi fi