wzorowane1 pktotwarteśrednie (szac.)
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.
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wzorowane5 pktotwarteśrednie (szac.)
A student proposed that, because tin(IV) iodide might be ionic, electrolysing the molten compound with inert electrodes should regenerate tin and iodine. (i) Label the diagram of the electrolytic cell to show which electrode is the anode and which is the…
wzorowane9 pktobliczenioweśrednie (szac.)
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)…
wzorowane2 pktobliczenioweśrednie (szac.)
When sodium burns in excess oxygen, the main product is sodium peroxide, . Determine the percentage covalent character and the bonding type in sodium peroxide using sections 9 and 17 of the data booklet.
wzorowane1 pktzamknięteśrednie (szac.)
The table shows the average electronegativity and the electronegativity difference for four substances, each made from two elements. Substance Average electronegativity Electronegativity difference P 3.3 0.3 Q 2.0 2.3 R 1.4 0.3 S 2.7 1.1 Which substance is an…