Answer: a potentially toxic chemical found in thermal grease used for the processor’s heatsink
Step-by-step explanation:
Exposure to Beryllium oxide can lead to it being inhaled which can cause irritations to the nose, lungs and throat. If this exposure is prolonged, a more serious condition known as Berylliosis which can lead to lung damage. This makes it a potentially toxic chemical.
Beryllium oxide is useful in electronic production due to it having good thermal conductivity whilst also possessing good insulation properties in relation to electricity. This enables it to be used as a filler in thermal grease.