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ICSE Class 10 Chemistry Question 5 of 23

Solved 2025 Specimen Paper ICSE Class 10 Chemistry — Question 8

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8
Question

Question 1(viii)

1H2 is an isotope of hydrogen. In the modern Periodic Table it will:

  1. be placed before hydrogen
  2. be placed after hydrogen
  3. be placed at the same position as hydrogen
  4. not have any position in the Periodic Table
Answer

be placed at the same position as hydrogen

Reason — The position of an element in the Periodic Table is determined by its atomic number. Therefore, isotopes of an element are not listed separately; instead, they are all represented under the same element symbol.