Question

which is the most abundant elements in the universe.​

Answer 1

Answer:

Oxygen

Explanation:

Oxygen composes about 49.5 % of the total mass of the Earth's crust, water and atmosphere.

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Answer 2

Answer:

Hydrogen

Explanation:

Hydrogen — with just one proton and one electron (it's the only element without a neutron) — is the simplest element in the universe, which explains why it's also the most abundant, Nyman said