Nitrogen has high electronegativity and can form a series of nitrides with many elements with lower electronegativity, including three types of ionic nitrides, covalent nitrides and metal nitrides...
Nicotine, commonly known as nicotine, belongs to the pyridine alkaloid and has a strong physiological effect on humans. When smoking, it can absorb the proper amount of nicotine, can excite the sp...
Home
