1. Structures Of An Atom
Group 2-Kailey Sawvell, Laketon McLaughlin, Bailey Hapney, Nathan Patterson, Autumn, Schulz, Curtis Brokaw, Cody Harris, Bailey Lytle, and Ryder Wilson.

2. 3 Basic Particles
Most atoms are made up of 3 basic particles, they are:
1. Protons- Positive electrical charge
2. Electrons- Negative electrical charge
3. Neutrons- No electrical charge
The three main subatomic particles are distinguished by mass, charge, and location in the atom. Protons and Neutrons are almost identical in size and mass. The mass of an electron is much smaller than that of a proton or neutron.

3. Each element has its own unique number of protons.
A Hydrogen Atom has one proton, but a helium atom has two protons. Lithium has three protons.
As you move your way through the Periodic Table, this pattern continues.​

4. Atomic Number and Mass Number
An atomic number is also known as the proton number. The mass number is also known as the nucleus number.
The number of protons in the nucleus of an atom determines an element's atomic number.

5. So if it contains 36 electrons it contains 36 protons
So if it contains 36 electrons it contains 36 protons. The atomic weight is actually a weighted average of all of the naturally occurring isotopes of an element relative to the mass of carbon-12.

6. Calculating Number of Neutrons
Neutrons are uncharged particles found within atomic nuclei. They were discovered by James Chadwick in Neutrons are made from one up quark and two down quarks.
The number of neutrons in an element varies. If two atoms of the same element have different numbers of neutrons then they are isotopes.

7. To figure out how many neutrons are in the nucleus, you have to know the mass number. You find all this information on the periodic table of elements. Number of Neutrons = Mass Number - Atomic Number
You have to round the atomic mass to the nearest whole number and subtract the number of protons from the mass.
The number you get is the number of neutrons in an atom

8. Isotopes Medical Isotopes
Helps to treat Acute myelogenous leukemia, AIDS & others, Breast cancer, Bone cancer pain, Children's cancer, Colon cancer, Degenerative joint diseases, Endocrine cancer, Heart disease, Hodgkin's disease, Immune disorders, Meningitis, Non-Hodgkin’s b-cell lymphoma, Non-small cell lung cancer, Ovarian cancer, Pancreatic cancer, Prostate cancer, Rheumatoid arthritis.

9. A medical isotope is a very small quantity of radioactive substance used in safe, cost-effective imaging and treatment of disease.
New technologies enable medical isotopes to be delivered directly to the site of diseased cells.
This is different from external beam radiation treatment where radiation is directed from outside of the body.

10. Amu
An amu is a very small unit of mass used to describe the mass of molecules and atoms.
Amu it is defined as one-twelfth of the mass of a single atom of the isotope carbon 12.
The atomic mass values given in the periodic table are average atomic masses. They are calculated using the exact masses and natural abundances of the stable isotopes of an element.

11. Weighted Averages
Average atomic masses are computed using a method called weighted averages. Weighted averages are used when the importance of the numbers to be averaged are different.
Average Atomic Masses
Average atomic masses are calculated in just the same way. Each isotope’s exact mass is multiplied by the decimal equivalent of its percent abundance and all the results are added together.

12. Average Atomic Mass
Average atomic mass - is the weighted average of the atomic masses of the naturally occurring.
Percent of isotope that exist in nature (decimal form) x mass of isotope + Percent of next isotope x its atomic mass = average atomic mass
The calculation of the average is a WEIGHTED AVERAGE.

13. Nuclear Medicine What is Nuclear Medicine?
Nuclear medicine is a medical specialty that uses small amounts of radioactive materials, known as radiopharmaceuticals, for diagnostic, therapeutic, and research purposes

14. It is something like taking an X-ray from the inside-out
It is something like taking an X-ray from the inside-out. Some responsibilities for nuclear medical technologists are-
Prepare and administer radiopharmaceuticals
Work directly with patients throughout the procedure
Work with sophisticated instrumentation and computers to generate digital images
Evaluate new procedures

15. Mole- Avogadro's Number
Avogadro's number is named after the nineteenth century Italian scienctist Amedeo Avogadro. Avogadro's hypothesis was all volumes of all gases at the same temperature and pressure contain the same number of molecules. Avogadro's number is × 10 to the 23rd power, usually designated by NA.
Mole
Mole is the SI measure for atoms, molecules, formula units, electrons, or photons. One mole of anything is just Avogadro's number of that anything. So for example: The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in kilogram of carbon 12.

16. Molar volume depends on the density of a substance and, like density, varies with temperature owing to thermal expansion, and also with the pressure.
For solids and liquids, these variables ordinarily have little practical effect, so the values quoted for 1 atm pressure and 25°C are generally useful over a fairly wide range of conditions.

17. Molar Mass & Mole/gram Conversions
The molar mass is the mass of one mole. The units are usually grams per mole. The molar mass is sometimes called the molecular weight.
It is the easiest to understand because a molecule has atoms that are stuck together, stay together, and act as one unit.
To determine the molar mass find the individual molar masses of the atoms of the substances from a periodic chart and then add them together.

18. Molecular mass = the sum of the atomic masses of each atom in the molecule example.
Molecular mass H2O = 2( ) =

19. Structures Of an Atom Those where the structures of an Atom.
Thank you.
Group 2-Kailey Sawvell, Laketon M, Bailey Hapney, Nathan Patterson, Autumn, Schulz, Curtis Brokaw, Cody Harris, Bailey Lytle, and Ryder Wilson