First the ionization energies (in kJ/mol) of three representative elements are given below:
Then incorrect option is:
  • a)
    Q: Alkaline earth metal
  • b)
    P: Alkali metals
  • c)
    R: s-block element
  • d)
    They belong to same period
Correct answer is option 'C'. Can you explain this answer?

Chemistry Question

3 Answers
Sanjeev Kumar Yadav answered Dec 27, 2018
In P difference between 1st and 2nd ionisation enthalpy is high it means it is difficult to remove 2nd electron from P it means alkali metal

similarly Q is alkaline earth metal.

similarly R is group 13 element and not sure block element

Ajith Gowda answered Nov 12, 2018
Removing electron from s block elements become more stable that's why ionisation energy Value increases

Bhanuprakash Sharma answered Apr 11, 2019
Because jab ham along the period jate h to I.E bdti h

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