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Question

Which of the following pentahalides does not exist?
  1. PF5
  2. PCl5
  3. PBr5
  4. PI5

A
PBr5
B
PF5
C
PCl5
D
PI5
Solution
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Q1
Reason
Phosphorous has lower electronegativity than nitrogen.
Assertion
Although $$PF_5, PCl_5$$ and $$PBr_5$$ are known, the pentahalides of nitrogen have not been observed.
Although $$PF_5, PCl_5$$ and $$PBr_5$$ are known, the pentahalides of nitrogen have not been observed.
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Q2
Assertion :Although PF5,PCl5, and PBr5 are known, the pentahalides of nitrogen have not been observed. Reason: Phosphorous has lower electronegativity than nitrogen.
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Q3
Statement I: Although PF5, PCl5 and PBr5 are known, the pentahalides of nitrogen have not been observed.
Statement II: Phosphorus has lower electronegativity than nitrogen.
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Q4
Assertion :Although PF5,PCl5 and PBr5 are known, the pentahalide of nitrogen has not been observed. Reason: Phosphorus has lower electronegativity than nitrogen.
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Q5
Reason
Phosphorus has lower electronegativity than nitrogen
Assertion
Although $$PF_5,PCl_5$$ and $$PBr_3$$ are known, the pentahalides of nitrogen have not been observed.
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