Zadanie 8
Wzorowane na: Chemistry HL Paper 1, May 2022, TZ1, pytanie 8. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
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Polecenie
A solution of hydrated nickel(II) ions, [Ni(H2O)6]2+, is green. Which statement explains the colour?
A. Green light is absorbed when electrons are promoted between d-orbitals
B. Light complementary to green is absorbed when electrons are promoted between d-orbitals
C. Light complementary to green is emitted when electrons return to lower d-orbitals
D. Light complementary to green is absorbed when electrons are promoted from d-orbitals to s-orbitals
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
B ✔
«in the complex the d-sublevel is split; light of one colour is absorbed when an electron is promoted between the split d-orbitals, and the colour observed is the one complementary to the colour absorbed»
Schemat punktowania
One mark for the correct option.