Page 02 SECTION 1 — 30 marks Attempt ALL questions 1. All noble gases are characterised by the completion of the outermost orbital. This orbital is A an s-orbital B a p-orbital C a d-orbital D an s or p-orbital. 2. The electronic configuration of an atom of X, in its ground state, is 1s22s22p63s23p63d14s2. X is an atom of A calcium B scandium C titanium D vanadium. 3. Which line in the table could represent the four quantum numbers of an outer electron in an Mg2+ ion? n l m s A 2 1 −2 −½ B 2 0 0 +½ C 2 1 −1 +½ D 3 0 0 −½