Question

An atom x contains 14 protons, 13 electrons, and 12 neutrons, and atom y contains 14 protons, 14 electrons, and 12 neutrons. what can you conclude?
a. x and y are atoms of the same element.
b. x and y are both ions.
c. x and y both have filled valence shells.
d. y is an ion but x is not.
e. x and y are isotopes of the same element.

Answer 1

a. x and y are atoms of the same element. 

If both atoms contain the same amount of protons, they are always the same element.

Answer 2

Answer:

a. X and y are atoms of the same element.

Explanation:

We conclude that the a. It is the right choice because for X and Y to be isotopes, they must have different numbers of neutrons in the nucleus.

X and Y have the same number of neutrons in the nucleus 14

In this case, X is an ion because it does not have the same number of protons in the nucleus as electrons, therefore it is charged (positively in this case)

And it has the same number of protons and electrons, therefore, it is electrically neutral.

the electronic configuration of Y is $[Ne] 3s^2 3p^2$

the electronic configuration of Y is$[Ne] 3s^2 3p^1$

to have a full shell the electrons in the sublayer p should be 6