Assertion: compound's element | /r/HasProperty | oxygen
Facets:
value: in order
type: OTHER
Source sentences:
text: The most important elements to join with carbon are hydrogen, oxygen, and nitrogen.
text: Group 6 elements, oxygen, sulfur, etc., have six electrons around the symbol, again without any concern to position except that there are two electrons in two positions and one electron alone in the other two positions.
text: These eight elements, summing to over 98% of the crust by weight, are, in order of decreasing abundance: oxygen, silicon, aluminium, iron, magnesium, calcium, sodium and potassium.