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you discover that an atom of an unknown element had 54 protons. identify the element and explain how you know the identity is correct. explain whether the unknown element is more or less reactive than an atom of an element that has 30 protons. identify an element that would have very similar chemical properties (as element 54) to the unknown element and explain why its chemical properties would be similar.

Respuesta :

Answer: Xenon

Explanation:

if you look on the periodic table of elements, youll notice that the only element with 54 protons is Xenon. Hope this helps!!

Protons are the positive charged subatomic particle that lies with the neutron in the nucleus of the atom.

The unknown element with 54 protons will be Xenon.

It is because Xenon is the only element in the periodic table having 54 protons. Element has the same number of protons and electrons therefore Xenon is the element that will have 54 protons.

It belongs to the noble gas group because the outer shell is a filled valence shell that is stable and less reactive compared to other elements.

Therefore it will be less reactive compared to the element having 30 protons.

The elements having similar properties as Xenon will be helium, neon, argon etc because they have the same group in the periodic table.

To learn more about Xenon follow the link:

https://brainly.com/question/20188831