Question

sep develop a model use the space to sketch each of the three neon isotopes. as you develop your model, consider the following: your model should show the subatomic structure of each isotope and the similarities and differences among the three isotopes. your model should include a key or labels to identify the parts. no model can accurately represent all the characteristics of its subject.

Explanation:

Step1: Recall neon - isotope basics

Neon has three main isotopes: neon - 20, neon - 21, and neon - 22. All isotopes of an element have the same number of protons. Neon has an atomic number of 10, so all neon isotopes have 10 protons.

Step2: Determine neutron numbers

For neon - 20, the mass number is 20. Since mass number = protons+neutrons, the number of neutrons is $20 - 10=10$. For neon - 21, the number of neutrons is $21 - 10 = 11$. For neon - 22, the number of neutrons is $22 - 10=12$.

Step3: Sketch the models

Draw a nucleus in the center. For each isotope, place 10 protons in the nucleus. For neon - 20, also place 10 neutrons in the nucleus; for neon - 21, place 11 neutrons; for neon - 22, place 12 neutrons. Then, draw two electron - shells around the nucleus with 2 electrons in the first shell and 8 electrons in the second shell (as neon has 10 electrons to balance the 10 protons). Use labels like "p" for protons, "n" for neutrons, and "e" for electrons.

Answer:

Sketch a model for neon - 20 with 10 protons, 10 neutrons in the nucleus and 10 electrons in two electron - shells (2 in the first, 8 in the second). Sketch a model for neon - 21 with 10 protons, 11 neutrons in the nucleus and 10 electrons in two electron - shells. Sketch a model for neon - 22 with 10 protons, 12 neutrons in the nucleus and 10 electrons in two electron - shells. Use labels "p" for protons, "n" for neutrons and "e" for electrons.