Lecture-2-Chemistry-_37185

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

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: , 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‐ 1st shell 8e‐ 2nd shell **note that an atom has a 3‐D shape 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: • • C • • 6p6n • valence = 4 • arrows indicate unpaired outer shell electrons Valences of: Oxygen = 2 Hydrogen = 1 • paired electrons...
View Full Document

This note was uploaded on 08/16/2011 for the course BIOL 1361-1362 taught by Professor Any during the Spring '08 term at University of Houston.

Ask a homework question - tutors are online