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JEE MainChemistryClassification of Elements and Periodicity in Properties

Given below are two statements: Statement I : Among the hydrides of group 16 elements, the one with the lowest boiling point is H₂S . Statement II : The central atom of the group 16 hydride with the highest boiling point can show a maximum covalency of 6. In the light of the above statements, choose the correct answer from the options given below:

Options

  1. ABoth Statement I and Statement II are true
  2. BStatement I is true but Statement II is false
  3. CStatement I is false but Statement II is true
  4. DBoth Statement I and Statement II are false

Correct answer

B. Statement I is true but Statement II is false

Step-by-step solution

The boiling point of group 16 hydrides follows the order: H₂S The hydride with the highest boiling point is H₂O , and its central atom is oxygen. Since oxygen belongs to the second period, it does not have vacant d-orbitals in its valence shell. Therefore, it cannot expand its octet and its maximum covalency is restricted to 4. Thus, Statement II is false. Answer: Statement I is true but Statement II is false

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