There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass. Why is this statement true?
1Hydrogen is a gas, but oxygen is a solid.
2Hydrogen atoms have a lower mass than oxygen atoms.
3Hydrogen is mostly in liquid form and oxygen is in solid form.
4Hydrogen is present as single atoms and oxygen is bonded in compounds.

Question

There are more hydrogen atoms in living organisms than any other atom, but oxygen is more abundant in terms of mass. Why is this statement true?
1Hydrogen is a gas, but oxygen is a solid.
2Hydrogen atoms have a lower mass than oxygen atoms.
3Hydrogen is mostly in liquid form and oxygen is in solid form.
4Hydrogen is present as single atoms and oxygen is bonded in compounds.

sandra_ · Answer

Hydrogen is present as single atoms and oxygen is bonded in compounds. i guess?