At 10⁻¹⁰ s during the evolution of the universe, formed, which are elementary particles that make up protons and neutrons?

Protons and neutrons are made of quarks and a cloud of gluons. The down quarks have a charge of -⅓  while an up quark has a charge of +⅔. So each neutron is made with two down quarks and one up quark, while each neutron is made with two up quarks and one down quark.

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explanation:

answer: -

reaction:

na + cl ⇌ nacl

balanced chemical equation:

na + 2cl ⇌ nacl2

sodium + clorine goes to form sodium chloride (table salt).

the product is nacl2.

and the reactants are na and cl.

(note: if you don’t know what ⇌ means, read below: -

⇌(double head arrow) means reversible reaction).