Zadanie 10
Wzorowane na: Chemistry SL Paper 1, May 2023, TZ2, pytanie 10. Treść, dane i kontekst są zmienione; sprawdzane umiejętności, format i punktacja jak w oryginale.
Darmowe konto pozwoli wrócić do niego później.
Polecenie
The nitrogen-nitrogen bonds in hydrazine, N2H4, diazene, N2H2, and nitrogen, N2, are N−N, N=N and N≡N. Which row gives these bonds in order of increasing bond strength and in order of increasing bond length?
A. Bond strength: N≡N < N=N < N−N; bond length: N≡N < N=N < N−N
B. Bond strength: N−N < N=N < N≡N; bond length: N−N < N=N < N≡N
C. Bond strength: N≡N < N=N < N−N; bond length: N−N < N=N < N≡N
D. Bond strength: N−N < N=N < N≡N; bond length: N≡N < N=N < N−N
Sprawdź rozwiązanieUkryj rozwiązanieKlucz i punktacja
Odpowiedź z klucza
D ✔
«more shared electron pairs between the same two atoms pull the nuclei closer together and hold them more strongly, so bond strength increases N−N < N=N < N≡N while bond length decreases, which means the increasing order of length is N≡N < N=N < N−N»
Schemat punktowania
One mark for the correct option.