Question

Why polonium has low melting point than tellurium?

Answer 1

The outer electron configuration of Polonium could differ so much from its lighter family member tellurium due to the electron constriction, causing an outer electron to fall into a lower shell, that the intramolecular forces are weaker. Thus a lower boiling point.

Answer 2

Polonium has low melting point than tellurium:

• The atomic number of polonium is 84 and that of tellurium is 52. This Effect is known as the relativistic effect.

• The relativistic effect is seen in only the compounds with heavy Nuclei, like the Polonium.

• In polonium, due to this effect, the outer electrons of the polonium fall into the lower shell.

• This happens because of the weak intramolecular forces.

• The weak intermolecular force is also known as the Vanderwalls force.
• Polonium is a very rare, radioactive metal.

• The radiation is released by polonium is dangerous to handle. It can cause cancer if 'chronic exposure' to the radiation occurs.

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