BIOL 150 Lecture Notes - Lecture 3: Atomic Number, Covalent Bond, Sulfur

47 views2 pages
15 Mar 2018
Department
Course
Professor

Document Summary

Biol 150 principles of molecular & cellular biology. We looked at the fundamental chemistry that underlies biological processes. Elements are made of individual atoms, each having a set number of protons (+ charge) that determines the atomic number of that element. Protons are balanced by orbiting tiny electrons (- charge), and held apart from each other by large neutrons (no charge). The number of neutrons can vary to create isotopes of an element, and some of these isotopes can be unstable, leading to radioactive decay by energetic emission of neutrons or other particles. Elements can also lose or gain electrons to become charged cations (+) or anions (-). The position of electrons flying around the nucleus is set by the number of protons present. Electrons tend to stay within specific orbitals, areas around the nucleus that can hold 2 electrons for each orbital.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents

Related Questions