1 / 6

Atomic Structure Review

Atomic Structure Review. atoms. Protons: P + identifies the element Cannot change (atomic number) Neutrons: N o Can change, called isotopes Electrons: E - Can change, called ions Counting Subatomic particles. Atoms can be written 3 different ways Potassium – 39 K – 39 39 K.

barclay-rice
Download Presentation

Atomic Structure Review

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Atomic Structure Review

  2. atoms • Protons: P+ identifies the element • Cannot change (atomic number) • Neutrons: No • Can change, called isotopes • Electrons: E- • Can change, called ions Counting Subatomic particles • Atoms can be written 3 different ways • Potassium – 39 • K – 39 • 39K

  3. Electron Configuration Holds 6 electrons Holds 10 electrons (n-1) Holds 2 electrons (n-2) Holds 14 electrons He is actually s because it can only hold 2 electrons

  4. The A group number = the number of valence electrons (except for He) 1A 8A 2A 3A 4A 5A 6A 7A Valence electrons = the # of dots for Lewis Dot Diagrams

  5. The electron structure of an atom determines many of its chemical & physical properties. • (Except for Helium=2) •He•

  6. Examples Ex) 1s2 2s2 2p6 3s2 3p3 = 15 e- = P (count the total electrons to find the atomic number) Ex) [Ar] 4s23d3 = 23 e- = V [ noble gas ] = all of the electrons needed for that noble gas

More Related