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JAMB Chemistry 1984 Question 38

Question 38

Atomic Structure

31R 199U 2412S 2010T 179Y. Which of the following statements is NOT true of the elements R, U, S, T, Y?

  1. A.R is an isotope of hydrogen
  2. B.U and Y are isotopes
  3. C.R, U, S and T are metals
  4. D.T is a noble gas
  5. E.S will react with oxygen to form SO.
Show the answer and explanation

Answer: C (R, U, S and T are metals)

Explanation

R (atomic number 1) is hydrogen, U and Y (atomic number 9) are fluorine and T (10) is neon, none of which is a metal. Only S (12, magnesium) is a metal, so C is false.