Question 43 : [Physical > Atoms, Molecules & Stoichiometry]
Reference: Past Exam Paper -June 2003 Paper Q3
Solution 43:
Answer: D.
sulphur number of neutrons = 32-16 = 16.
A cannot be answer because number of neutrons of Na = 23-11 = 12
B cannot be answer because number of neutrons of Mg = 24-12 = 12
C cannot be answer because number of neutrons of Si = 28-14 = 14
D is the answer because number of neutrons of P = 31-15 = 16
therefore contains the same number of neutrons as S.
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