Q9 This question refers to elements of the periodic table with atomic numbers from 3 to 18. In the table below, some elements are shown by letters, even though the letters are not the usual symbols of the elements.



a) Which of these is

i) a noble gas
ii) a halogen
iii) an alkali metal
iv) an element with valency 4

b) If A combines with F, what would be the formula of the resulting compound

c) What is the electronic configuration of G

Solution