I would say Na. Oxygen has 2 valence electrons and when reacting with other molecules, the ones with the fullest or emptiest shells will react the least. Both H2 and Na are in the Alkali Metals in the first row, but since H2 has 2 molecules, it would use more oxygen than Ana
Answer:
earth land assembling together to form single large landmass
it would be a crystalline solid, because it could be extended in multiple directions.
The molar mass of Beryllium is 9.012182 u (symbol I can't put down) 0.000003 U
