Carbon is a non metal and also has four valence electrons.
Answer:
They are both halogens and have the same number of electrons on their outer shell.
Any element with 7 electrons in the outermost shell will have similar properties. Thus other elements in the same column of the periodic table as chlorine will have similar properties.
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Dipole Dipole Forces. LDFs are too weak to remain as liquids at room temperature, making them gases. DDFs are the only possible choice.
-T.B.
No, some species didn’t have bones and things of the such that could become fossilized.