Zadanie 5
Wzorowane na: Chemistry HL Paper 1, May 2024, TZ2, pytanie 5. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
An electron in a hydrogen atom falls from the energy level n = 4 to the energy level n = 2. Which statement is correct?
A. A photon is emitted and its energy equals the difference between the two energy levels
B. A photon is absorbed and its energy equals the difference between the two energy levels
C. A photon is emitted and its energy equals the energy of the n = 4 level
D. A photon is emitted and its energy equals the sum of the energies of the two energy levels
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
A ✔
«a line in an emission spectrum is produced when an electron moves to a lower energy level and a photon is emitted; the photon energy equals the difference in energy between the two levels»
Schemat punktowania
One mark for the correct option.