Help a) Type several paragraphs describing your “core sample” of Earth’s layers in detail.
i. Explain what a core sample is. Then, tell whether it is currently possible to take a core
sample like the model you’ve created.
ii. Compare and contrast the layers in your model, including the significance of the
colors.
iii. Discuss what it means to create a scale model.
iv. Include a table with the values you determined for each layer.
v. Discuss the relationships of each layer to the others, including depth.

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.