1) The electronic configurations of the atoms of four different elements are given below. For which element would you expect the value of the first ionization energy to be the largest? a) 1s1 b) 1s2 c) 1s2 2s1 d) 1s2 2s2 2) The electronic structure of an atom of an element in Group 6 of the Periodic Table could be a) 1s2 2s2 2p2 b) 1s2 2s2 2p4 c) 1s2 2s2 2p6 3s2 3p6 3d6 4s2 d) 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 3) Which pair of atomic numbers represents elements which are both in the p-block of the Periodic Table? a) 4,8 b) 6, 12 c) 8, 16 d) 10, 20 4) Which of the following has the smallest ionic radius? a) F- b) Na+ c) Mg2+ d) O2- 5) Which of the following does not have exactly 10 electrons? a) An ion of fluorine, F– b) A molecule of methane, CH4 c) A molecule of nitrogen, N2 d) An ion of sodium, Na+ 6) The first five ionization energies, in kJ mol–1, of aluminium are 578, 1817, 2745, 11 578, 14 831 The orbitals from which the first five electrons are removed during ionization, starting with the first electron, are a) 1s 2s 2p 3s 3p b) 1s 1s 2s 2s 2p c) 3p 3s 2p 2s 1s d) 3p 3s 3s 2p 2p 7) Going across Period 3 from sodium to aluminium a) the melting temperature increases. b) the radius of the atom increases. c) the radius of the metal ion increases. d) the bonding in the element changes from metallic to covalent. 8) The isotopes of magnesium, 25-Mg and 24-Mg , both form ions with charge 2+. Which of the following statements about these ions is true? a) Both ions have electronic configuration 1s2 2s2 2p6 3s2. b) 25-Mg 2+ has more protons than 24-Mg 2+. c) The ions have the same number of electrons but different numbers of neutrons. d) The ions have the same number of neutrons but different numbers of protons 9) Going down Group 1 from lithium to rubidium a) the radius of the atom decreases. b) the radius of the ion decreases c) the first ionization energy decreases. d) the polarizing power of the ion increases 10) Which of the following formulae for compounds of germanium, Ge, is unlikely to be correct, given the position of germanium in the Periodic Table? a) GeF3 b) GeH4 c) GeS2 d) GeO2

Plenary quiz periodic properties and IE

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