"Red" Phosphorus Is Insoluble in Carbon Disulfide,has a Broad Melting

question 82

Multiple Choice

"Red" phosphorus is insoluble in carbon disulfide,has a broad melting range and a very low vapor pressure,and does not conduct electricity.This evidence suggests that this substance is probably:

• A)crystalline and metallic
• B)a crystal of P₄ molecule units
• C)amorphous and polymeric
• D)P⁴⁺ ions in a "sea" of electrons
• E)cubic closest-packed unbonded P atoms

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