blymouton13
11.02.2020 •
Chemistry
* All separate questions that I needs answers to* Thank you
What element has 12 electrons when the atom is electrically neutral?
What element is in the alkaline-earth metals group and has 20 protons?
This element has 7 electrons when the atom is electrically neutral?
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Ответ:
Explanation:
If a sample is impure, it means it contains multiple substances, this means that when you test it in a flame test, it will come up with a mixed color meaning you wont be able to tell what ions are in the substance.