chem chapter 7
correct name for NH4SO4
ammonium sulfate
chemical bond formation may take place due to interaction between _____ ??
cation
what is described as the force holding two atoms together?
chemical bond
what is true about binary ionic compounds?
d; they only contain TWO elements
T/F: A cation is a negatively charged atom
false
T/F: A crystal lattice is a three-dimensional structure formed by positive ions surrounded by negative ions and negative ions surrounded by positive ions.
false
T/F: The oxidation # of a compound is equal to the # of valence electrons it has
false
T/F: according to the electron sea model, metals consist of metallic cations surrounded by delocalized valence electrons
false
T/F: lithide is the name of the cation formed when lithium loses an electron
false
T/F: when an atom gains electrons, it becomes positively charged
false
which physical property of ionic compounds is in their sold state
high melting points
how many electrons does lithium gain or lose to achieve a stable octet configuration
lose 1
anions are ____ charged?
negative
A and C will ?
not combine
cations are ____ charged?
positive
T/F: An ionic bond is an electrostatic force that holds together oppositely charged atoms in a compound
true
T/F: The element, neon, with the electron configuration Ls2 2s2 2p6, will not form a chemical bond with another element, oxygen
true
T/F: an alloy results when an additional element is introduced into the metallic crystal.
true
T/F: elements in the S - and P - blocks generally have one common oxidation #, while d-block elements can have more than one possible #
true
T/F: in an ionic bond, two cations can bond together to form a compound
true
T/F: metallic elements tend to form cations rather than anions
true
T/F: the charge of a monatomic ion is its oxidation #
true
which is the charge that results when oxygen becomes an ion?
- 2
B and F
1B:1F
B and E will ?
3B:2E
compound has the formula X3Y. for every x atom present in this compound, how many y atoms are there
5
correct name for C0Co3
A; cobalt (II) carbonate
group 13 elements tend to acquire which charge when they form ions?
+ 3
X (two dots) and Y (5 dots) =
X3Y2
