Which of the following is NOT true of ionic compounds?
A. The ions in an ionic compound are not physically attached to each other.
B. Ionic compounds must have an positive ion and a negative ion.
C.Ionic Compounds involve electrons that are being lost or gained.
D. All statements are true.
D.All statements are true.
Which of the following is NOT one of the exceptions to the octet rule?
D.All are exceptions
D.All are exceptions
How many sodium atoms need to combine with one carbonate ion to make a neutral compound?
Na charge = +1 CO3 charge = -2
How many electrons are needed in the outer energy levels of MOST atoms for the atom to be chemically stable?
Lithium's oxidation number is +1. The oxidation number of phosphorus in lithium phosphate (Li3PO4) is?
Li = +1 O = -2 P = ?
The octet rule states what two things?
Atoms want to have 8 valence electrons.
Atoms are either 8 or bust (they either will gain electrons to get 8 valence electrons, or they will give up their electrons, depending on the number of valence electrons they have.)
What are the physical properties of an ionic compound?
Melting point is high
Boiling point is high
Hardness is high (they are brittle)
The force that holds two atoms together is called a(n) (1)__________. Such an attachment may form by the attraction of the positively charged (2)_________ of one atom for the negatively charged (3)________ of another atom, or by the attraction of charged atoms, which are called (4)_______. The attractions may also involve (5)_______ electrons, which are the electrons in the outermost (6)_________. The (7)_________ are a family of elements that have very little tendency to react. Most of these elements have a set of eight outermost electrons, which is called a stable (8)________. The relatively stable electron structures developed by loss of electrons in certain elements of groups 3, 4, 13, and 14 are called (9)______.
Word Bank: Chemical Bond; Electrons; Energy level: ions; Nobel Gases; Nucleus; Octet; Pseudo-Noble Gas Formations; Valence
9.Pseudo-Noble Gas Formations
T or F: A positively charged ion is called an anion.
F (anions are negatively charged, while cations are positively charged)
T or F: Elements in group 1 lose their one valence electron, forming an ion with a charge of 1+.
T or F:Elements tend to react so that they acquire the electron structure of a halogen.
F (they react to form the electron structure of a Noble Gas)
T or F: The electron structure of a zinc ion (Zn with charge of 2+) is an example of a pseudo-noble gas formation.
T or F: Nonmetals form a stable outer electron configuration by losing electrons an d becoming anions.
How many chloride (Cl with a charge of 1-) ions are present in a formula unit of magnesium chloride, given that the charge on a Mg ion is 2+?
What is the relationship between lattice energy and the strength of the attractive force holding ions in place?
The more negative the lattice energy is, the greater the force.
In electron transfer involving a metallic atom and a nonmetallic atom during ion formation, which of the following is correct?
A.The metallic atom gains electrons from the nonmetallic atom.
B.The nonmetallic atom gains electrons from the metallic atom.
C.Both atoms gain electrons.
D.Neither atom gains electrons.
D.The nonmetallic atom gains electrons from the metallic atom.
T or F:The energy of an ionic compound is higher than that of the separate elements that formed it.
T or F:Ions that have larger charges tend to produce a more negative lattice energy than ions with smaller charges doe.
A one-atom ion is called a(n) (1)_________ ion. The charge of such an ion is equal to the atom's (2)_________, which is the number of (3)________ transferred to or from the atom to form the ion. In ionic compounds, the sum of the charges of all the ions equals (4)________. Ions made up of more than one atom are called (5)_________ ions. If such an ion is negatively charged an includes one or more oxygen atoms, it is called a(n) (6)_______. If two such ions can be formed that contain different numbers of oxygen atoms, the name for the ion with more oxygen atoms ends with the suffix (7)________. The name for the ion with fewer oxygen atoms ends with (8)______.
In the chemical formula for any ionic compound, the chemical symbol for the (9)_______ is written first, followed by the chemical symbol for the (10)________. A(n) (11)________ is a small number used to represent the number of ions of a given element in a chemical formula. Such numbers are written to the (12) _________ of the symbol for the element. If no number appears, the assumption is that the number equals (13)_____.
Word Bank: Anion; -ate; cation; electrons; zero; lower right; monatomic; one; oxidation number; -ite; oxyanion; poly-atomic; subscript
How many outermost d electrons are there in an ion that has achieved a pseudo-noble gas configuration?
Where does the subscript that indicates the number of atoms appear, relative to a chemical symbol in a formula?
To the lower right.