Sublevels and the shapes of s and p orbitals

Chemia IBPaper 1A, maj 2026, TZ1wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 3

What is the correct electron configuration of the selenium atom? A. 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁴ B. 1s²2s²2p⁶2d¹⁰3s²3p⁶4s²4p⁴ C. 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶ D. 1s²2s²2p⁶3s²3p⁶3d⁸4s²4p⁶

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 2026, TZ2wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 11

The diagram shows an outline of the periodic table with four regions labelled A, B, C and D. An element has the ground state electron configuration [Ar] 3d⁷ 4s². In which region is it found? A. Region A B. Region B C. Region C D. Region D

• Materiał graficzny

Chemia IBPaper 1A, maj 2026, TZ3wzorowane1 pktzamknięteśrednie (szac.)

Zadanie 12

Which of these could be the ground-state electron configuration of an atom of a d block element? A. [Ar] 4s² 3d¹⁰ 4p¹ B. [Ne] 3s² 3d⁶ C. [Ar] 4s² 3d⁶ D. [Ar] 4s² 4p⁶

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

Zadanie 5

Three orbital shapes, labelled I, II and III, are drawn below. Which row correctly identifies the shapes of a 2s orbital and a 2p orbital? A. 2s: II, 2p: I B. 2s: I, 2p: III C. 2s: I, 2p: II D. 2s: III, 2p: II

• Materiał graficzny

Chemia IBPaper 2, listopad 2025, TZ1wzorowane6 pktotwarteśrednie (szac.)

Zadanie 1a

(i) The boxes for the 1s and 2s orbitals of a sulfur atom are shown below. Draw the remaining orbitals needed for its ground-state electron configuration, filling and labelling each one. Use section 7 of the data booklet. (ii) For a sulfur atom, sketch the…

• Materiał graficzny

Chemia IBPaper 3, maj 2023, TZ1wzorowane1 pktotwarteśrednie (szac.)

Zadanie 1d

Suggest one reason why the first electron affinity of magnesium is positive.

Chemia IBPaper 2, maj 2023, TZ1wzorowane3 pktotwartełatwe (szac.)

Zadanie 2a

(i) Annotate and label the ground state orbital diagram of carbon below, using arrows to represent electrons. (ii) Sketch the shapes of the two types of occupied orbital identified in part (i) on the axes below, and state the orbital type for each.

• Materiał graficzny

Chemia IBPaper 2, maj 2023, TZ2wzorowane2 pktotwartełatwe (szac.)

Zadanie 4a

Tellurium has atomic number 52. Using the position of tellurium in the periodic table, deduce two features of its electron configuration.

Chemia IBPaper 1, maj 2022, TZ1wzorowane1 pktzamkniętełatwe (szac.)

Zadanie 6

What is the maximum number of electrons that can occupy a single orbital of the 4d sublevel? A. 2 B. 5 C. 10 D. 14