WBCS.LIVE practice question

In modern periodic table, the number of periods is -

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

Answer options

  1. 2
  2. 6
  3. 7
  4. 8

Correct answer and explanation

Correct answer: 7

Explanation: āœ… Correct Answer: C) 7 šŸ“š Explanation: The modern long-form periodic table is organized into exactly 7 horizontal rows, which are officially called 'periods'. The table also contains 18 vertical columns known as 'groups'. The period number of an element directly indicates the total number of electron shells present in its atoms. This systematic layout helps scientists track periodic trends in elemental properties.