Ionic Bonding

In an ionic compound, the attraction between cations and ____________________ holds the compound together.

anions

Use the table above. Write the formula and the name for the ionic compound between #35 Bromine and #20 Calcium. (Cation comes first)

chemical formula - CaBr2 Name - calcium bromide

Which of the following is a typical property of an ionic compound? a. low melting point b. poor conductor of electric current when melted c. crystal lattice structure d. all of the above

crystal lattice structure

If an atom is neutral, it has the same number of

electrons & protons

If an ion has a negative charge, it has more

electrons than protons

Use the table above. Write the formula and the name for the ionic compound between the two polyatomic ions SO4 & NH4 (Cation comes first)

formula -- (NH4)2SO4 Name - ammonium sulfate

Use the table above. Write the formula and the name for the ionic compound between the polyatomic ion NO3 and #13 Aluminum. (Cation comes first)

formula -- Al(NO3)3 Name - aluminum nitrate

Which of the following groups contain three elements with stable electron configurations? a. lithium, krypton, argon b. argon, neon, barium c. xenon, neon, boron d. helium, xenon, neon

helium, xenon, neon

You are given the melting points of three unknown substances and are asked to predict which one is an ionic compound. You would select the compound with the ____________________ melting point.

highest

What is the charge on the atom represented by the Figure above?

positive

If an ion has a positive charge, it has more

protons than electrons

A compound is made up of a metal and nonmetal. The compound is most likely a

solid

The formation of an ionic bond involves the

transfer of electrons.

In an electron dot diagram, each dot represents a(an)

valence electron

If an atom is neutral, and two electrons are taken away from it, it's charge will be

+2

If an atom is neutral, and two electrons are added to it, it's charge will be

- 2

What represents an ionic bond in the cartoon above?

Attraction between cations and anions

Explain the cartoon above in terms of protons & electrons, balanced and unbalanced charges. Fully describe the atom before and after the elctron loss.

Before: the atom had the same number of protons as electrons. The charges were balanced, and the atom was neutral. After: because the atom lost an electron, it now has more protons than electrons. The charges are unbalanced, and the charge became positive.

Fluorine is the most reactive nonmetal. To fluorine's immediate right in the periodic table is neon, a noble gas that does not form chemical bonds. Explain this contrast in reactivity in terms of atomic structure.

Fluorine only needs to gain 1 electron, which makes it highly reactive. Neon has its highest energy level filled, which makes it stable and unreactive.

Use the table above. Write the formula and the name for the ionic compound between #19 Potassium and #8 Oxygen. (Cation comes first)

Formula - K2O Name - potassium oxide

In a periodic table that included electron dot diagrams, in which column would the diagrams contain more dots—Group 2A or Group 6A ?

Group 6A

How does the saying "Opposites attract" apply to the bonding in the compound shown in row A of Figure 6-3?

KI is an ionic compound. The force of attraction between oppositely charged ions keeps the compound together.

Which of the elements in Figure 6-1 are most likely to react and form a compound?

Li & F

In an electron dot diagram of Lithium, there is one dot. In an electron dot diagram of silicon, there are four dots. Which element would you expect to be more reactive?

Lithium; It is easier to lose one electron than gain/lose 4 electrons.

How did the cations in the cartoon get their charge?

Lost electrons to get a positive charge

Choose the statement that correctly identifies the most stable of the elements in Figure 6-1. a. Lithium is the most stable element because it has to lose only one electron to achieve a stable configuration. b. Carbon is the most stable element because it can form four bonds. c. Fluorine is the most stable element because it has to gain only one electron to achieve a stable configuration. d. Neon is the most stable element because its highest energy level is filled.

Neon is the most stable element because its highest energy level is filled.

Would you normally expect neon (Ne) to form compounds?

No, neon has eight electrons in its outermost level and is stable.

In the ionic compound potassium bromide, KBr, the element that forms cations is ____________________.

Potassium

What compound name belongs in box (1) in Figure 6-2?

Sodium chloride

Write a description to place in box (2) in Figure 6-2.

The force of attraction between oppositely charged cations & anions.

Typically, atoms gain or lose electrons to achieve

a stable electron configuration.