Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table
Atomic structure and the Periodic Table — practice question
Some chlorine-containing substances have their structures displayed. A contains one carbon atom attached to four chlorine atoms. B is a diatomic chlorine molecule Cl-Cl. C is a section of an ionic lattice made up of Cl- and K+ ions. D is a chain arrangement containing C, H, Cl and F atoms. E is a structure in which aluminium atoms are bonded to chlorine atoms.
(a(i))[1]
Which substance is a molecule with two atoms?
(a(ii))[1]
Which substance shows part of an ionic structure?
(a(iii))[2]
Which substance is an element? Explain your response.
(a(iv))[1]
Determine the empirical formula for substance D.
(b(i))[1]
In what way do these two isotopes differ in atomic structure?
(b(ii))[1]
Determine how many neutrons are present in one atom of the isotope $^{35}_{17}Cl$.
(b(iii))[2]
Draw the electronic structure of a chlorine atom. Include every shell and every electron.
Worked solution & mark scheme
This 9-mark question has a full step-by-step worked solution and mark scheme. One marking point: “B, chlorine or Cl₂” …