Curium is a highly radioactive element. It is not found in nature, and it was first created in a laboratory in 1944. Which category of metal does it most likely belong to?

The answer to your question is Actinides

Explanation:

Actinides elements have atomic numbers from 83 to 103. Actinides are referred to as rare earth metals that are radioactive.

Some properties of Actinides

- Instable

- Synthetically made

- Have a silvery luster

- They can undergo nuclear reactions

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.