An element's atomic number is 54. how many protons would an atom of this element have

54. The elemental number and protons are the same for every element.

54 protons

Explanation:The number of protons in the nucleus of an atom is equal to the number of Atoms.

Therefore in this case we have atomic number to be 54 therefore number of protons is 54 as well.

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.