Question about The Learning Company Achieve! Math & Science Grades 1-3 (381933) for PC, Mac
The number of protons in the nucleus of an atom is labeled Z.
Atoms with the same Z (istotopes) have the same chemical properties. So you cannot differentiate between them on the basis of their chemical properties because they all react the same way. From a chemical point of view they are the same element. They all receive the same chemical symbol. Knowing the Z number of an atom is equivalent to knowing the chemical element. One Z, one symbol. In short, if you know Z, you know the chemical identity of the element.
Hope it helps.
Posted on Oct 01, 2009
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Posted on Jan 02, 2017
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