If hydrogen could be held at absolute zero what would it’s form be
At absolute zero, hydrogen would exist as a Bose-Einstein condensate, a state of matter in which particles are cooled to temperatures close to absolute zero and form a single quantum state.
If hydrogen is cooled to absolute zero (0 Kelvin or -273.15 degrees Celsius), it would exist in its solid form. This solid form of hydrogen is often referred to as "solid molecular hydrogen" or "solid hydrogen".
To understand why hydrogen becomes solid at absolute zero, we need to consider its phase diagram. A phase diagram shows the different states (solid, liquid, and gas) of a substance under varying temperature and pressure conditions.
In the case of hydrogen, at low temperatures and high pressures, it transitions from a gas to a liquid state. Further cooling and increased pressure will cause it to solidify. At absolute zero, where there is no thermal energy left, hydrogen molecules lose all their vibrational and rotational motion, resulting in the formation of a solid structure.
However, achieving absolute zero is practically impossible in laboratory conditions due to the Third Law of Thermodynamics, which states that it is impossible to reach absolute zero using a finite number of steps. In reality, achieving temperatures just above absolute zero (close to a few millikelvins or even lower) has been accomplished, resulting in the formation of solid hydrogen under extreme pressure.
If hydrogen could be held at absolute zero (0 Kelvin or -273.15 degrees Celsius), it would exist in its solid state. At this extremely low temperature, hydrogen would undergo a transition from its usual gaseous state to a solid one.
Hydrogen in its solid form is often referred to as "solid hydrogen" or "solid molecular hydrogen." However, it is important to note that achieving absolute zero is currently not possible in practice, so solid hydrogen has not been observed under these conditions yet.