Question

You discover that an atom of an unknown element has 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 to the unknown element and explain why its chemical properties would be similar

Answer 1

Xenon, because the amount of protons=the atomic number, and Xenon’s atomic number is 54. Some elements with similar chemical properties would be Neon, Helium, Argon, Krypton, Nitrogen, etc because they are all in the period #18, which means they have similar properties. They are all noble gases. Hope this helps :)

Answer 2

The branch of science which deals with chemicals and bonds is called chemistry.

The correct answer is 54 that is xenon.

To find the element, first, we have to find the number of electrons. In the question, there are 54 protons.

In an element, the number of electrons and the proton are always the same. Hence the number of unknown electrons is 54 which is xenon.

The xenon belongs to the noble gas element which has a fully filled valance shell and has high stability therefore it is less reactive than the element which has 30 protons.

The element that has similar properties to the xenon is group 18 element that is helium, neon, and etc.

For more information, refer to the link:-

https://brainly.com/question/12985618