Which statement describes the properties of lanthanoids and actinoids?(1 point)

Responses

They are brittle and dull, and they tend to conduct both electricity and thermal energy.
They are brittle and dull, and they tend to conduct both electricity and thermal energy.

They are malleable and lustrous, and they tend to conduct both electricity and thermal energy.
They are malleable and lustrous, and they tend to conduct both electricity and thermal energy.

They are brittle and dull, and they tend to be poor conductors of both electricity and thermal energy.
They are brittle and dull, and they tend to be poor conductors of both electricity and thermal energy.

They are malleable and lustrous, and they tend to be poor conductors of both electricity and thermal energy.

1 answer

The correct response is:

They are brittle and dull, and they tend to conduct both electricity and thermal energy.

Lanthanoids and actinoids are typically characterized as being brittle and dull, but they are also known to be relatively good conductors of electricity and thermal energy, especially in certain conditions.