Question

K-40 is one of the few naturally occuring radioactive isotopes of elements
of low atomic number. Its percent natural abundance among K isotopes
is 0.012%. How many 40K atoms are present in 225 mL of whole milk containing 1.65 mg K/mL? (K = 39.10 g/mol)

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.