University:
Harvard University
Course:
CHEM 20 | Organic Chemistry
Academic year:

2024
Views:

163

Pages:

2
Author:

Tatum Christian

Chemistry Worksheet 1 Ionic Bonding NAME: 1) State the number of valence electrons in each of the following atoms, and then draw electron dot diagrams to represent them. Na _____ O_____ Si_____ F_____ C_____ Ne_____ Na O Si F C Ne 2) State the Octet rule. Write the electron configuration for the following atoms and ions, and explain how the Octet rule applies in each case: Octet Rule: Na ___________________________________________________ Na1+___________________________________________________ explain: O _____________________________________________________ O2-_____________________________________________________ explain: Al ____________________________________________________ Al3+____________________________________________________ explain: N _____________________________________________________ N3-_____________________________________________________ explain: 3) For each of the following pairs of elements, use electron dot diagrams to show the transfer of electrons between atoms, the formulas for ions formed, and the chemical formula of the ionic compound formed. a)sodium and fluorine b) calcium and chlorine c) magnesium and sulfur d)aluminum and oxygen 4)Briefly describe what is meant by the term “ionic bond” and explain how ionic bonds form and hold ionic compounds together. Also, explain why an ionic compound formula such as NaCl can be used to represent a compound that is made of huge numbers of ions (e.g. see the diagram of NaCl below). 5)Rank the following ionic compounds in order from least to greatest melting point, and explain in terms of charge, radius, and lattice energy MgO, K2O, NaCl, SrO