Question

what is the simplest element on the earth

Answer 1

Hydrogen

Hydrogen is the simplest element with just one proton and one neutron ( in protium)

Answer 2

Answer:

Hydrogen

[What Are the Ingredients of Life?] 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.

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