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AP EAMCET202318 May 2023Morning ShiftChemistryp Block Elements (Group 13 & 14)Actual

Which one of the following is correct?

Options

  1. AThallium is more electropositive than aluminium
  2. BBoron has high electrical conductivity
  3. CAn aqueous solution of ortho boric acid is generally used as a mild antiseptic
  4. DBoron -11 ( ¹¹ ~B ) isotope has high ability to absorb neutrons

Correct answer

C. An aqueous solution of ortho boric acid is generally used as a mild antiseptic

Step-by-step solution

Thallium electronegativity =1.62 (Pauling scale) Aluminium electronegativity =1.61 Boron is a bad conductor of electricity at low temperatures. B-11 isotope is a stable and non-radioactive isotope. An aqueous solution of orthoboric acid is generally used as a mild antiseptic.

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