WBCS.LIVE practice question

How many groups and periods exist in the modern Periodic table?

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 9 groups, 9 periods
  2. 7 groups, 8 periods
  3. 18 groups, 7 periods
  4. 8 groups, 7 periods

Correct answer and explanation

Correct answer: 18 groups, 7 periods