Question

Identify which of the following you would expect to be characteristic of a solid with the formula P4. Drag the appropriate items to their respective bins: poor thermal conductivity, very hard, low melting point, high electrical conductivity

Characteristic

Not characteristic

Answer 1

-poor thermal conductivity -------------   characteristic
-very hard -------------------------------------   Not characteristic
-low melting point --------------------------   characteristic
-high electrical conductivity ------------   Not characteristic

P₄ (phosphorous) is a molecular solid, the unit particles are atoms or molecules, forces between unit particles are dispersion, dipole only and P₄ is a soft, low to moderate melting points, insoluble in water (this is the reason to store white phosphorous in water to inhibit to react with atmospheric oxygen), but It is soluble in benzene. It has poor thermal and electrical conductivity. Tetraphosphorus (P₄) exists as molecules made up of four atoms in a tetrahedral structure.

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