Hydrogen.
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Hydrogen.
Neon is a non meta element. Atomic mass of it is 20.
Nitrogen, element 7, has an atomic mass of 14.0067, rounded to 14.007.
Atomic mass of an element measures the mass of that element on a molecular scale, taking into account neutrons and protons, which weigh approximately 1. Electrons are negated. Atomic mass is also the mass, in grams, of 1 mole of that element.
Mercury has an atomic mass of 200.