Chapter 5 Atomic Structure

1. Radioisotopes

1.1. Emits high-energy radiation

1.2. Caused damage to cells and causes cancer

1.3. DANGEROUS!

1.4. Important applications if handled properly

1.5. Unstable nuclei thus dissipate their energy by continuously emitting radiation.

2. Arrangement of atoms

2.1. Electrons on each shell (O'levels)

2.1.1. Element

2.1.1.1. Central area

2.1.2. Shell 1

2.1.2.1. Max 2e

2.1.3. Shell 2

2.1.3.1. Max 8e

2.1.4. Shell 3

2.1.4.1. Max 8e

2.2. Electrons on each shell (A'levels)

2.2.1. 2(n)^2

2.3. Valence Electrons & shell

2.3.1. E & shell furthest away from the nucleus

3. Atoms

3.1. Made up of

3.1.1. Proton (+)

3.1.2. Neutron (0)

3.1.3. Electron (-)

3.2. Ways to rep elements

3.2.1. Diagram

3.2.2. Nucleon Number

4. Isotopes

4.1. Formula in finding Relative Atomic Mass

4.1.1. {[(A1/100) x B1] +[(A2/100) x B2]}

4.2. Same element with same number of protons and electrons.

4.2.1. THUS

4.2.1.1. similar chemical properties

4.3. Different number of neutrons

4.3.1. THUS

4.3.1.1. different physical properties

5. Periodic Table

5.1. Elements

5.1.1. Same Group

5.1.1.1. Same chemical properties

5.1.1.1.1. Same number of valence electrons

5.1.2. Same Period

5.1.2.1. Same number of shells throughout