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JAMB Chemistry 2008 Question 10

Question 10

Periodic Table

In the periodic table, electrical and thermal conductivities are properties of elements that

  1. A.decrease across the period and increase down the group
  2. B.increase across the period and decrease down the group
  3. C.decrease across the period and down the group
  4. D.increase across the period and down the group.
Show the answer and explanation

Answer: A (decrease across the period and increase down the group)

Explanation

Conductivity follows metallic character, which falls across a period (metals to non-metals) and rises down a group.