butterflyrhodes01
26.08.2020 •
Chemistry
The periodic table . is arranged by atomic mass is arranged by number of protons was developed by early alchemists is divided into vertical periods and horizontal groups
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Ответ:
Is the range by number of protons sorry if I'm wrong
Explanation:
Ответ:
b c
Explanation:
it is to trap and make sure nothing harmful goes passed it to keep u safe.