Ionic Bonding Flashcards
(18 cards)
What are ionic bonds?
Strong electrostatic attractions between positive and negative ions.
How can ionic compounds be represented?
Using electron configuration diagrams.
Describe the arrangement of ions in a giant ionic structure.
Ions are arranged in a regular, three-dimensional pattern called a lattice.
What surrounds each sodium ion in the sodium chloride lattice?
Six chloride ions.
What surrounds each chloride ion in the sodium chloride lattice?
Six sodium ions.
What gives ionic compounds high melting points?
The large number of strong electrostatic attractions.
How are positive ions formed?
By metal atoms losing electrons.
What is the charge of positive ions formed from group 1, 2, or 3 elements?
Equal to the group number.
What are transition metal positive ions known as?
Cations.
What are negative ions generally formed from?
Non-metal atoms gaining electrons from metal ions.
What is the charge of negative ions based on?
8 minus the group number of the element.
What are examples of polyatomic ions?
- CO2-* * SO4-* * NO3-* * OH-
What are negative ions known as?
Anions.
What factors must be considered to compare the strength of ionic bonds?
- Ionic charge * Ionic radius
Why is the ionic bonding in MgF stronger than in NaF?
Magnesium ion is smaller and has a greater charge than sodium ion.
Fill in the blank: The ionic charge and ionic radius are sometimes called the _______.
charge/size ratio.
What is the role of electrostatic attraction in ionic bonding?
It increases as ionic charge increases and ionic radius decreases.
True or False: Ionic compounds have low melting points.
False.
