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Tag: Chemistry lessons

Postulates of Dalton’s Atomic Theory

Image credit>>Tahoma The main points of Dalton’s atomic theory, an explanation of the structure of matter in terms of different combinations of very small particles, are...

Collision Theory

For a reaction to take place,certain conditions must be fulfilled.Like we all know, reactions are made up of both reactants and products and for...

Technetium as a Radioactive Substance

Image of a person’s skeleton obtained using an excited form of technetium-99.  Technetium is an unusual radioactive  element. Although a d-transition element (under manganese in Group VIIB)...

Radioactive Substances and Nuclear Reactions

In ordinary chemical reactions, only the outer electrons of the atoms are disturbed. The nuclei of the atoms are not affected. In nuclear reactions,...

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