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

Responses

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 conduct 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 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 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 (or lanthanides) and actinoids (or actinides) have some metallic properties, they are generally considered more brittle than many other metals. They can conduct electricity and thermal energy, but they are often less conductive than transition metals.