An element is shiny, malleable, and ductile. Which element could it be? B(15)

H(1)

He(2)

Li(3)

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Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Which statement accurately represents the arrangement of electrons in bohr’s atomic model?