Zadanie 1b
Outline why solid tin(IV) iodide is classified as a polar covalent compound. Use sections 9 and 17 of the data booklet.
Position in the bonding triangle
Locate a binary compound on the van Arkel-Ketelaar bonding triangle from the average electronegativity and the electronegativity difference of its elements, and predict its bonding type and properties from that position.
Tę umiejętność sprawdza 9 zadań wzorowanych na arkuszach IB z lat 2022–2025.
Zadania sprawdzające tę umiejętność: 9 Otwórz w wyszukiwarce z filtrami
Zadanie 1c
Contrast tin and tin(IV) iodide in terms of one physical property.
Zadanie 1b
4.81 g of sulfur was heated in a stream of chlorine gas until the reaction was complete. The mass of the chloride produced was 10.13 g. (i) Calculate how many atoms are present in this 4.81 g sample of sulfur. Use sections 2 and 7 of the data booklet. (ii)…
Zadanie 5c
(i) Using sections 9 and 17 of the data booklet, and showing your working, deduce the type of bonding present in magnesium chloride, MgCl2, and its percentage covalent character. (ii) Assuming purely ionic bonding, and using sections 9 and 12 of the…
- Materiał graficzny
Zadanie 3c
A computer simulation models what happens when small pieces of lithium and of sodium are dropped into water. For each metal five pieces of increasing mass are used, the same set of masses for both metals, and the simulation records how long each piece takes to…
- Materiał graficzny
Zadanie 3a
Potassium bromide, KBr, forms a three-dimensional lattice of ions. (i) Demonstrate how the electronegativity values and bonding triangle in sections 9 and 17 of the data booklet support an ionic model for this solid. (ii) Outline the nature of the…
Zadanie 3a
Chromium(III) oxide, Cr2O3, is a hard ceramic used as an abrasive and as a wear-resistant coating. Outline the bonding in chromium(III) oxide and its electrical conductivity in the solid state. Use sections 9 and 17 of the data booklet.
Zadanie 3b
Beryllium metal is produced by the electrolysis of beryllium chloride, BeCl2, dissolved in molten sodium chloride. (i) Write the half-equation for the process at the electrode where beryllium metal is produced. (ii) Calculate the atom economy of this…
Zadanie 9
Which compound has bonding that is best described as predominantly ionic? Use sections 9 and 17 of the data booklet. A. NO2 B. ICl C. BaO D. SiH4