(a(i))[2]
What does the term molecule mean?
(a(ii))[1]
What does the term element mean?
(b(i))[1]
What is the atomic number of A?
(b(ii))[1]
What is the nucleon number of B?
(b(iii))[1]
Which of A, B, C and D are isotopes of each other?
(b(iv))[1]
Which of A, B, C and D are atoms?
(b(v))[1]
Which of A, B, C and D are positive ions?
(c)[3]
Fill in the table.