Lab Assignment 5 - Atomic Structure

If the atomic number is 12, how many electrons are in one Magnesium atom?

12 electrons

What is the atomic number of a neutral atom that has 5 neutrons and 4 electrons?

4

There is one more identified element in the samples you brought back, Potassium. How many protons does Potassium have?

19 protons

Can you create an atom with Atomic Number equal to 2? Click the red submit button once you think you have it correct.

Put the following onto the holotable: - 2 protons - 2 electrons *You can click the red button after only those because it will put on the neutrons for you!

Can you create an atom with Mass Number of 3 and a neutral charge? Click the red submit button when you think you have it correct.

Put the following onto the holotable: - 2 protons - 2 electrons - 1 neutron

Create an isotope of the atom on the holotable. Click the red submit button when you are done.

Put the following onto the holotable: - 3 protons - 3 electrons - 5 neutron

There is an element, Aluminum, in the samples you brought back that can be found at the third row of the Periodic Table. How many neutrons does Aluminum have?

14 neutrons

When dealing with isotopes, it is important to keep the atomic number in mind. What is the Atomic Number of Lithium? Check the structure of the Lithium atom and click View Theory if you want to read the Theory pages before answering.

3 since it's the number of protons

Which of the following is an isotope of Lithium? You can use the holotable or images to help you.

A Lithium atom with Atomic number = 3 and Mass number = 7

Now make this isotope an anion. Click the submit button when you are finished.

Add on the last electron

Why did scientists have to come up with a different model after Bohr?

All mentioned reasons

The second element present in your rock collection, has 25 protons but only 23 electrons. Can you tell what it is, it after consulting the periodic table?

It is a cation of iron

Can you turn the atom you created into a cation? Click the red submit button once you are done.

Just take off one electron from the diagram

My advanced analytical machinery has found that one of the elements in your rock collection has 12 protons. Can you tell me the name of it after consulting the periodic table? Some elements are missing, but for the purpose of this simulation you will find all you need in the periodic table in front of you.

Mg - Magnesium

Are the atoms in this image the isotopes of the same element?

No, since they don't have the same Atomic number

What is the atomic number of an anion that has 5 neutrons and 4 electrons?

less than 4 since an anion should have less protons than electrons

What are the subatomic particles of an atom? You can lower your labpad and use the lithium structure on the holotable to help you.

protons, neutrons, electrons