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

Question

Responses

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

Answer 1

The correct statement that describes the properties of lanthanoids and actinoids is:

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

While lanthanoids and actinoids can exhibit some degree of malleability, they are generally more brittle compared to other metals, and they are good conductors of both electricity and heat.