Question

why do elements with an atomic number greater than that of lead tend to be unstable? they have fewer protons than electrons. they have a stable electron configuration. they do not interact with other elements. they emit radiation in the form of particles or electromagnetic waves.

Explanation:

Elements with atomic numbers greater than lead are unstable because they undergo radioactive decay, emitting radiation in the form of particles or electromagnetic waves to reach a more stable state.

Answer:

They emit radiation in the form of particles or electromagnetic waves.