Crystals can be divided into four categories according to their structural particles and forces: ionic crystals, atomic crystals, molecular crystals and metal crystals.Atomic crystals: common atomic crystals are some simple substances and some compou…
The biggest immediate challenge for the EU will be replenishing its depleted gas inventories. While the EU could still increase LNG imports from countries such as the US, such purchases would be more expensive.Refilling natural gas storage space to h…
Silicon nitride is a compound of silicon and nitrogen. Si3n4 is the most thermodynamic stable in silicon nitride.…