General Science IBDP Chemistry 3. Periodicity HL June 7, 2021 Shveta 0 Comments ibdp chemistry, Periodicity 1.Which of the following salts form coloured solutions when dissolved in water? I. ScCL3 II. FeCl3 III.NiCl2 IV. ZnCl2I and II only II and III only III and IV only I, II, III and IV 2. Which is an essential feature of a ligand?a negative chargean odd number of electronsthe presence of two or more atoms the presence of a non-bonding pair of electrons 3. Which equation represents the third ionization energy of an element M?M+(g) → M4+(g) + 3e– M2+(g) → M3+(g) + e– M(g) → M3+(g) + 3e– M3+(g) → M4+(g) + e– 4. Which electrons are lost by an atom of iron when it forms the Fe3+ ion?One s orbital electron and two d orbital electronsTwo s orbital electrons and one d orbital electron Three s orbital electrons Three d orbital electrons 5. Which properties are typical of d-block elements? I. complex ion formation II. catalytic behaviour III. colourless compoundsI and II only I and III only II and III only I, II and III 6. Which combination of ion charge and ion size produces the greatest lattice enthalpy?High charge, large sizeHigh charge, small sizeLow charge, small size Low charge, large size7. Which salts form coloured solutions when dissolved in water? I. FeCl3 II. NiCl2 III. ZnCl2I and II only I and III onlyII and III onlyI, II and III 8. Which combination is correct for the complex ion in [Co(NH3)4(H2O)Cl]Br? Oxidation state of cobalt Shape of the complex ion Overall charge of the complex ion A. +2 Octahedral +2 B. +3 Octahedral –1 C. +2 Octahedral +1 D. +2 Tetrahedral +1 ABCD
