Chem Ch 7 Review

halide ion
valence electron
octet rule
coordination number
ionic bond
metallic bond
electron dot structure

1.	What is the electron configuration of the iodide ion?
2.	In a hexagonal close-packed crystal, every atom (except those on the surface) has ____ neighbors.
3.	How many valence electrons are in a silicon atom?
4.	What is the net charge of the ionic compound calcium fluoride?
5.	What is the electron configuration of the gallium ion?
6.	How many valence electrons are in an atom of magnesium?
7.	How many electrons does nitrogen gain in order to achieve a noble-gas electron configuration?
8.	What is the formula for sodium sulfate?
9.	Which metallic crystal structure has a coordination number of 8?
10.	Which subatomic particles are free to drift in metals?
11.	What is the electron configuration of the calcium ion?
12.	What is the charge on the cation in the ionic compound sodium sulfide?
13.	The octet rule states that, in chemical compounds, atoms tend to have ____.
14.	How many valence electrons does a helium atom have?
15.	What is the formula of the ion formed when phosphorus achieves a noble-gas electron configuration?
16.	What does the term coordination number in ionic crystals refer to?
17.	What is the name given to the electrons in the highest occupied energy level of an atom?
18.	What characteristic of metals makes them good electrical conductors?
19.	How many electrons does barium have to give up to achieve a noble-gas electron configuration?
20.	What is the maximum charge an ion is likely to have?
21.	How many electrons does silver have to give up in order to achieve a pseudo-noble-gas electron configuration?
22.	What is the name of the ionic compound formed from lithium and bromine?
23.	What is the electron configuration of the oxide ion (O)?
24.	What is the basis of a metallic bond?
25.	A compound held together by ionic bonds is called a ____.
26.	What is the formula unit of sodium nitride?
27.	How many valence electrons are in an atom of phosphorus?
28.	Ionic compounds are normally in which physical state at room temperature?
29.	What is the formula for potassium sulfide?
30.	What is the formula unit of aluminum oxide?
31.	How does an  ionic bond form?
32.	What is the formula of the ion formed when cadmium achieves a pseudo-noble-gas electron configuration?
33.	How many valence electrons are transferred from the nitrogen atom to potassium in the formation of the compound potassium nitride?
34.	What is the formula of the ion formed when potassium achieves noble-gas electron configuration?
35.	Under what conditions can potassium bromide conduct electricity?
36.	What is the formula of the ion formed when tin achieves a stable electron configuration?
37.	How does calcium obey the octet rule when reacting to form compounds?
38.	What is the name of the compound with the formula KNO?
39.	The electron configuration of a fluoride ion, F, is ____.
40.	An ionic bond is a bond between ____.
41.	How does oxygen obey the octet rule when reacting to form compounds?
42.	What is the charge on the strontium ion?
43.	How many valence electrons are transferred from the calcium atom to iodine in the formation of the compound calcium iodide?
44.	Give the electron configurations for mercury and its 2 ion.
45.	Give the electron configuration for calcium the ion.
46.	Give the electron configuration for the lithium ion.
47.	Give the electron configurations for iodine and its 1– ion.
48.	Give the electron configuration for the chloride ion.
49.	Give the electron configuration for the oxide ion.
50.	Write the formula for the compound barium oxide.
51.	Write the formula for the compound rubidium phosphide.
52.	Write the electron configuration diagram that shows the transfer of electrons that takes place to form the compound sodium fluoride. Include the electron configurations of the ions formed.
53.	How many valence electrons are in rubidium?
54.	What is the charge of a particle having 9 protons and 10 electrons?
55.	How many electrons does a gallium atom give up when it becomes an ion?