Question

64. Red phosphorus is chemically less reactive because
a) it does not contain P-P bonds
b) it does not contain tetrahedral P, molecules
c) it dos not catch fire in air even upto 400°C
d) it has a polymeric structure​

Answer 1

Red phosphorus also has groups of 4 atoms, but they are not rings. One side is open, which allows each P4 group to chemically bond to a neighboring group, so that a huge amorphous network is formed instead of individual molecules. This is a relatively stable arrangement which makes the red phosphorus less reactive.

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Answer 2

Concept Introduction: Phosphorus is a volatile element.

Explanation:

We have to Find: Red phosphorus is chemically less reactive because

a) it does not contain P-P bonds

b) it does not contain tetrahedral P, molecules

c) it dos not catch fire in air even upto 400°C

d) it has a polymeric structure

The correct answer is Option No. D, It has a polymeric Structure. Red phosphorus also has groups of 4 atoms, but they are not rings. One side is open, which allows each P4 group to chemically bond to a neighboring group, so that a huge amorphous network is formed instead of individual molecules. This is a relatively stable arrangement which makes the red phosphorus less reactive.

Final Answer: The correct answer is Option No. D, It has a polymeric Structure.

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