No, it is not possible to create metallic hydrogen in an apartment using household materials. Producing metallic hydrogen requires extremely high pressures and temperatures that cannot be achieved with household materials or equipment.
To create metallic hydrogen, hydrogen gas needs to be compressed to pressures exceeding millions of times atmospheric pressure. Achieving such high pressures typically involves specialized equipment such as diamond anvil cells or large-scale laboratory apparatus.
Additionally, the temperatures required to produce metallic hydrogen are extremely high, often exceeding thousands of degrees Celsius. These temperatures are well beyond what can be reached with household materials or conventional heating methods.
Moreover, working with high-pressure and high-temperature conditions without the necessary expertise, proper safety precautions, and specialized equipment can be extremely dangerous and should never be attempted in a home setting.
The creation of metallic hydrogen remains an active area of scientific research, and current methods used in laboratories involve advanced techniques and specialized equipment that go well beyond what can be replicated in a typical household environment.