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NEET2012Chemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Which of the following is the correct statement for PH ₃ ?

Options

  1. AIt is less poisonous than NH ₃ .
  2. BIt is less basic than NH ₃ .
  3. CElectronegativity of PH ₃> NH ₃ .
  4. DIt does not show reducing properties.

Correct answer

B. It is less basic than NH ₃ .

Step-by-step solution

Nitrogen is more electronegative and smaller in size than phosphorus. Therefore, the lone pair is concentrated on a small region and has maximum electron density. So, NH ₃ is more basic than PH ₃ .

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