(a(i))[1]
Which element produces a lilac colour in a flame test?
(a(ii))[1]
Which element has a pinkish-brown metallic appearance?
(a(iii))[1]
Which element can occur in two or more distinct solid forms?
(a(iv))[1]
Which element has a complete outer electron shell with two electrons?
(a(v))[1]
Which element is obtained from hematite?
(b)[3]
Fill in the table to give the numbers of protons, electrons and neutrons in these two isotopes.