Electron configurations of transition element ions

Chemia IBPaper 1A, maj 2026, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 3

Which species has the ground state electron configuration [Ar] 3d⁸? A. Cu²⁺ B. Zn²⁺ C. Ni D. Ni²⁺

Chemia IBPaper 1A, maj 2025, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 16

What is the electron configuration of the Co²⁺ ion? A. [Ar] 3d⁷ B. [Ar] 4s² 3d⁵ C. [Ar] 4s¹ 3d⁶ D. [Ar] 4s² 3d⁷

Chemia IBPaper 1A, maj 2025, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 18

Vanadium forms compounds in the +2, +3, +4 and +5 oxidation states. Which statement explains why vanadium shows a range of oxidation states? A. The 3d sublevel splits into two sets of orbitals of different energy in its complexes B. The 3d and 4s electrons…

Chemia IBPaper 1A, specimen 2025wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 16

Which element forms a stable compound in which its oxidation state is +6? A. Ti B. V C. Cr D. Zn

Chemia IBPaper 2, maj 2024, TZ1wzorowane3 pktotwarteśrednie (szac.)

Zadanie 6b

(i) Deduce the nuclear symbol, _Z^AX, of the chromium-52 ion that contains 21 electrons. (ii) Complete the orbital diagram of this ion by drawing an arrow for each electron. (iii) Predict whether this ion is paramagnetic or diamagnetic and…

• Materiał graficzny

Chemia IBPaper 1, maj 2023, TZ1wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 8

Which ion has an incomplete d sub-level? A. Cu²⁺ B. Zn²⁺ C. Ca²⁺ D. Sc³⁺

Chemia IBPaper 2, listopad 2023, TZ1wzorowane4 pktotwartetrudne (szac.)

Zadanie 5e

Manganese, unlike aluminium, is a transition element. (i) Deduce, from the electron configuration of the Mn²⁺ ion, why manganese is classified as a transition element. (ii) The first four ionization energies of aluminium and manganese are shown. One…

• Materiał graficzny

Chemia IBPaper 2, listopad 2023, TZ2wzorowane4 pktotwarteśrednie (szac.)

Zadanie 5e

Like aluminium chloride, iron(III) chloride forms dimers in the vapour phase. Iron, however, is a transition element and aluminium is not. (i) Outline, in terms of its electronic structure, what identifies a transition element. (ii) The graph shows the first…

• Materiał graficzny

Chemia IBPaper 2, maj 2022, TZ2wzorowane3 pktotwarteśrednie (szac.)

Zadanie 5a

(i) State the full electron configuration of Co²⁺. (ii) Explain why there is a large increase from the 9th to the 10th ionization energy of cobalt.

Chemia IBPaper 1, maj 2022, TZ2wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 7

Which of the following ions are expected to be paramagnetic? I. V³⁺ II. Mn²⁺ III. Cu⁺ A. I and II only B. I and III only C. II and III only D. I, II and III

Chemia IBPaper 2, listopad 2022wzorowane5 pktotwarteśrednie (szac.)

Zadanie 2e

Compound P can be synthesized by reacting 4,6-dichloroquinazoline with another reactant, B. (i) Deduce the structure of B. (ii) The reaction can be catalysed by copper(I) iodide, CuI. State the ground-state electron configuration of the Cu⁺ ion.…

• Materiał graficzny

Chemia IBPaper 2, listopad 2022wzorowane1 pktotwartełatwe (szac.)

Zadanie 3a

State the ground-state electron configuration for Ni²⁺.