Question

PLEASE ANSWER!!!!!!! 80 POINTS
Which statement describes the properties of lanthanoids and actinoids?(1 point)

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

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

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

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

Answer 1

It’s between A and and C

Answer 2

Lanthanoids and actinoids are transition elements of the periodic table. These elements are lustrous and malleable and can conduct thermal energy and electricity. Thus, option A is correct.

What are lanthanoids and actinoids?

Lanthanoids and actinoids are the terms used to refer to the elements of the f-block of the periodic table that are placed separately due to the difference in their electronic structures.

These elements show the property somewhat similar to that of the metals and hence are lustrous and malleable. Due to the transition electron phase, they are used in optical devices and cardiac pacemakers.

The lanthanoids and actinoids are good conductors of heat and electricity as their electrons can be transferred and carry charges like metals.

Therefore, option A. the lanthanoids and actinoids are conductors and are malleable.

Learn more about actinoids here:

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