The chart below shows the crystal shapes and melting points of two forms of solid phosphorus.

June 2017 NY Regents Chemistry Exam

49 The chart below shows the crystal shapes and melting points of two forms of solid phosphorus.

Which phrase describes the two forms of phosphorus?
(1) same crystal structure and same properties
(2) same crystal structure and different properties
(3) different crystal structures and different properties

(4) different crystal structures and same properties

Solution: As evident from the chart above, the two forms of phosphorus have different crystal shape and structure. This will results in different properties.

Answer: 3

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