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The number of protons for an atom with 20 neutrons and 20 electrons will be 20.

What is an atom ?

An atom is the smallest particle of an element. It consist of proton, neutron and electron.

To determine the number of protons and also identify the correct symbol for an atom with 20 neutrons and 20 electrons, we must first acknowledge the following facts

  • Atom in a neutral state, the number of protons must be equal to number of electrons.
  • Atom in a nuclear stable state, number of protons must be equal to the number of neutrons

Therefore, the number of protons for an atom with 20 neutrons and 20 electrons will be 20.

The symbol for this atom is Ca which is Calcium.

Learn more about Atom here: https://brainly.com/question/6258301

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