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ICSE Class 10 Chemistry Question 1 of 18

Solved 2020 Question Paper ICSE Class 10 Chemistry — Question 1

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1
Question

Question 1(i)

The element with highest ionization potential, is:

  1. Hydrogen
  2. Caesium
  3. Radon
  4. Helium
Answer

Helium

Reason — As ionization potential decreases down the group and increases on moving from left to right in a periodic table, hence, helium, the element on the top right most corner of the periodic table has highest ionization potential.