An ion is any atom that has a net charge (any atom that is not neutral is an ion).
100
How many valence electrons does P (Phosphorus) have?
5 valence electrons.
100
Do ionic compounds have a low or high melting point?
High melting points
100
Draw the compound formed when Li reacts with F
Li F
100
Draw the electron dot diagram for Selenium, Se
6 valence electrons: ••• Se •••
200
Define the term “cation.”
A cation is an atom that has lost electrons to become stable and has a positive charge.
200
How many valence electrons does Ca (Calcium) have?
2 valence electrons
200
When melted, ionic compounds become poor / good conductors of electricity.
When melted, they become good conductors of electricity.
200
What species always loses electrons in an ionic bond?
The cation
200
Draw the electron dot diagram for Br -
8 valence electrons: •• •• Br •• ••
300
Define the term "anion."
An anion is any atom that gains electrons to become stable and has a negative charge.
300
Are the atoms Cl- and Ar isoelectronic?
Yes, both have exactly 18 electrons.
300
True or False: Ionic Compounds are brittle and tend to shatter.
True
300
Draw the compound formed when Ca reacts with S
Ca S
300
Draw the electron dot diagram for Mg 2+
8 valence electrons: •• •• Mg •• ••
400
An atom has 38 protons and 39 electrons. Is this neutral, a cation, or an anion?
The atom is an anion, with a charge of 1-.
400
What is the charge of the cation Iron (IV)?
4+
400
What is the name of the orderly arrangement of cations and anions in ionic compounds?
Lattice
400
What species always gains electrons in an ionic bond?
The anion
400
::Daily Double::
Fill in the orbital diagram and write the electron configuration for Oxygen, O 2-; Hint: 1s, 2s, 2p
1s ••, 2s ••, 2p ••_••_••;
[1s2 2s2 2p6]
500
Explain why ions form.
Ions form because all atoms want to be stable. Most atoms are stable when they have 8 valence electrons, so atoms will gain or lose electrons to have a full valence shell.
500
Are the atoms I and Br isoelectronic?
No, I has 53 total electrons while Br has 35 total electrons.
500
What force strongly holds the cations and anions in ionic compounds together?
Ionic Bonds
500
Draw the compound formed when Cl reacts with Be
Cl Be Cl
500
Fill in the orbital diagram and write the electron configuration for Sulfur, S; Hint: 1s 2s 2p 3s 3p