wzorowane4 pktotwarteśrednie (szac.)
(i) Write the equation for the reaction of Rb with water, , including state symbols. (ii) Describe the type of bonding in and in , and explain how the valence electrons in each produce that type of bond.
Metallic bonding and properties of metals
Describe the metallic bond as electrostatic attraction between a lattice of cations and delocalized electrons, and use it to explain the electrical conductivity, thermal conductivity, malleability and ductility of metals and to link these properties to their uses.
Zadania sprawdzające tę umiejętność: 5 Otwórz w wyszukiwarce z filtrami
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…
wzorowane1 pktzamkniętełatwe (szac.)
Which statement best explains why aluminium can be drawn into thin wires? A. The delocalized electrons carry charge through the metal. B. The layers of aluminium ions can slide over each other while the delocalized electrons keep the lattice bonded. C.…
wzorowane1 pktzamkniętełatwe (szac.)
Which properties of copper depend on the movement of its delocalized electrons? I. electrical conductivity of the molten metal II. thermal conductivity III. high density A. I and II only B. I and III only C. II and III only D. I, II and III
wzorowane1 pktzamkniętełatwe (szac.)
What is the explanation for the ductility of copper, which allows it to be drawn into wires? A. The attraction between the cations and the delocalized electrons is weak. B. The cations are held in the lattice by strong bonds that act in fixed directions. C.…