Ionic Bonding Flashcards
How do you find if a bond is ionic?
The difference in EN is more than 1.8
What type of bond is likely to be formed between an atom from group 15 and an atom from group 16.
A covalent bond!
An atom gains 3 electrons.
What is the charge?
3-
An atom gains 3 electrons.
What group of the periodic table is it from?
Group 15. (3- charges)
In the compound potassium chloride, what element is it isoelectric with?
Argon! (-1)+(+1)
How many valence do the ions of main block elements usually have?
Eight! 8!
What is the electronic configuration for an s-block metal element in period 4?
6
…3p
Write symbol for all elements whose ion has the configuration
2 2 6
1s 2s 2p
O, F,
How do you find if a bond is covalent?
The difference in EN is less than .4
What’s a crystal lattice?
The packing arrangement of ions in an ionic compound
What’s a unit cell?
The smallest repeating unit in a lattice
What’s a formula unit?
The simplest ratio of the atoms
Physical properties of an ionic compound.
- hard
- brittle
- high melting point
- poor conductor as solid
