(a(i))[1]
State which symbol or formula denotes an element that is used as an inert electrode in electrolysis.
(a(ii))[1]
State which symbol or formula represents an ion produced when an atom gains two electrons.
(a(iii))[1]
State which symbol or formula represents a basic oxide.
(a(iv))[1]
State which symbol or formula represents an ion that gives a yellow colour in a flame test.
(a(v))[1]
State which symbol or formula represents a toxic gas made during the incomplete combustion of methane.
(a(vi))[1]
State which symbol or formula represents an element used as a reactant in a fuel cell.
(b)[2]
Finish Fig. 1.1 so that it shows the dot-and-cross diagram for one water molecule. Show only the outer-shell electrons.