Zadanie 2b
(i) Explain why Rb has a lower first ionization energy than strontium, Sr. (ii) Outline why Rb has a lower electronegativity than potassium, K. (iii) Explain why oxygen, O, has a lower first ionization energy than nitrogen, N.
Discontinuities in first ionization energy
Explain the dips in first ionization energy between groups 2 and 13 and between groups 15 and 16 in terms of the energy of the electron removed (a higher p sublevel, or repulsion in a paired orbital), and use them as evidence for sublevels.
Tę umiejętność sprawdza 10 zadań wzorowanych na arkuszach IB z lat 2022–2026.
Zadania sprawdzające tę umiejętność: 10 Otwórz w wyszukiwarce z filtrami
Zadanie 3a
(i) Describe the structure of solid magnesium and state the forces that hold it together. (ii) Explain why a piece of magnesium can be hammered into a new shape without breaking. (iii) Explain why the melting point of magnesium is higher than that of sodium.…
Zadanie 6
Which graph shows the correct trend in the first ionization energies of the elements with atomic number Z = 11 to Z = 18? A. Graph A B. Graph B C. Graph C D. Graph D
- Materiał graficzny
Zadanie 1b
Explain the decrease in first ionization energy from magnesium to aluminium.
- Materiał graficzny
Zadanie 1d
Suggest one reason why the first electron affinity of magnesium is positive.
- Materiał graficzny
Zadanie 1e
Suggest reasons why argon has the largest first ionization energy and the largest positive first electron affinity of the elements in period 3. Largest first ionization energy: Largest positive first electron affinity:
- Materiał graficzny
Zadanie 5
Which statement best explains why the first ionization energy of aluminium is lower than that of magnesium? A. Aluminium has more protons than magnesium B. Aluminium has a smaller atomic radius than magnesium C. The outer electron of aluminium is in a 3p…
Zadanie 5g
Using nuclear charge, electron sub-levels and the shielding by filled inner shells, explain why the first ionization energy rises from sodium to magnesium but falls from magnesium to aluminium.
Zadanie 5g
Explain, in terms of nuclear charge, sub-levels and shielding, why magnesium has a higher first ionization energy than both sodium and aluminium.
Zadanie 5
What is the correct order of increasing first ionization energy? A. N < O < F B. O < N < F C. F < N < O D. O < F < N