Question

A 2.0 curie Ir-192 (half-life = 73.83 days) source has decayed by 60% since its manufacture. How long has it been since its manufacture?

Answer 1

The melting point of a substance is the temperature at which it transforms from a solid to a liquid state. Metals show a high melting point as they exist in a crystalline solid form. High melting point metals have strong intermolecular forces between atoms.