Halogen Fluorine Scandium Hydrogen
Halogens are active and play a key role in the change of all things. Between chemical and chemical combinations, they can change the properties of things, and they are heterogeneous and show a new state.
Fluorine is particularly unique among halogens. Its nature is very strong, and there are many violent responses to objects, but because of this, it is widely used in various processes and scientific research. Although it is fearsome, it is good to use it to help Qiwei.
Scandium, although not as obvious as fluorine, still has its own unique features. In metallurgy and other industries, adding a little scandium can greatly improve the properties of materials, toughness and special ability, and add wings to the excellent materials used in utensils.
Hydrogen, the lightest body, pervades between heaven and earth. It can burn, providing great power to the world, and is the foundation of all things in chemical industry. The formation of water, the combination of all kinds of organic matter, all depend on the participation of hydrogen.
These four, although different in nature, interact with each other, evolving thousands of changes between heaven and earth, adding endless wonders to the prosperity of nature and personnel. Wise people often study the nature of these things, and use the principle of creation to seek well-being for the world, which is really a great contribution.

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