Zadanie 2
Wzorowane na: Chemistry SL Paper 1A, November 2025, TZ3, pytanie 2. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
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Polecenie
Which feature of the hydrogen emission spectrum shows that the spacing between the electron energy levels decreases as the energy of the levels increases?
A. The lines within each series get closer together towards the high-frequency end
B. The spectrum consists of separate lines rather than a continuous band of colour
C. Separate series of lines are found in the ultraviolet, visible and infrared regions
D. The lines in the visible region are more intense than those in the ultraviolet region
Sprawdź rozwiązanieUkryj rozwiązanieKlucz CKE i punktacja
Odpowiedź z klucza
A ✔
«each line corresponds to a transition between two levels, so lines that converge at high frequency show that the levels themselves converge; separate lines only show that the levels are discrete, and the different series show transitions ending on n = 1, 2 and 3»
Schemat punktowania
One mark for the correct option.