Lecture-2-Chemistry-_42283

2e 8e notethat anatomhas a3d shape 1st shell 2ndshell

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: nucleus, termed shells. – Orbitals can hold a maximum of 2 e‐ – The quantity of energy levels, or shells, is determined by the quantity of electrons: 1st shell: 1 orbital only (2 e‐’s max) 1s 2nd shell: 4 orbitals (8 e‐’s max) 2s, 2px, 2py, 2pz 3rd shell: 4 orbitals (8 e‐’s max) Neon; atomic number 10 Is neon a reactive molecule? 2e‐ 8e‐ **note that an atom has a 3‐D shape 1st shell 2nd shell 10e‐ total An Atom’s Electron Arrangement Determines Its’ Chemical Activity • Atoms with unpaired electrons in its’ outermost energy shell are reactive termed valence electrons – Neon is unreactive (outer shell completely filled with 8e‐) – Carbon: atomic # of 6: Nitrogen: atomic # of 7: • valence = 4 C 6p6n • • Valences of: Oxygen = 2 Hydrogen = 1 • • Octet rule: tendency of reactive atoms to stabilize by filling their oute...
View Full Document

This note was uploaded on 10/16/2010 for the course HE 012928 taught by Professor Storrs,london during the Spring '10 term at École Normale Supérieure.

Ask a homework question - tutors are online