9701 MCQ Solution 43

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.