Chemistry 0620 · IGCSE · Atomic structure and the Periodic Table
Atomic structure and the Periodic Table — practice question
Five atoms, A, B, C, D and E, have their electronic structures displayed. Answer the questions that follow about these structures. Each structure can be used once, more than once, or not used at all. State which of A, B, C, D or E represents:
(a(i))[1]
an atom belonging to Group VIII of the Periodic Table
(a(ii))[1]
an atom that is a reactive non-metal
(a(iii))[1]
an atom with a proton number of 11
(a(iv))[1]
an atom that has just three shells of electrons
(a(v))[1]
an atom that forms a stable ion carrying a single positive charge
(b)[3]
Complete the table with the numbers of electrons, neutrons and protons in the nitrogen atom $^{15}_{7}\text{N}$ and chromium ion $^{52}_{24}\text{Cr}^{2+}$.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Answer A.” …