Zadanie 2b
Wzorowane na: Chemistry SL Paper 2, May 2023, TZ2, pytanie 2(b). Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Informacja do zadań 2a-2d.
Atmospheric pollutants include oxides of sulfur, which cause acid deposition, and ozone, which is formed in photochemical smog.
Polecenie
Ozone, O3, is formed in photochemical smog from oxygen molecules and oxygen atoms. Deduce the Lewis structure of ozone.
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
Lewis structure with one O=O double bond and one O-O single bond, the three atoms joined in a chain «O=O-O»:
central O has one lone pair; the double-bonded terminal O has two lone pairs; the single-bonded terminal O has three lone pairs ✔
OR the structure with the double bond on the other side
OR the central O joined to one terminal O by a double bond and to the other by a coordination bond, with the same lone pairs
Schemat punktowania
[1] for a correct structure with all lone pairs shown. Accept any combination of dots, crosses or lines for electron pairs. Formal charges are not required for the mark.