Chemistry Chapter 6
Which of the following values for 🔺EN would represent a bond that is mostly ionic? A. 0.8 B. 2.0 C. 2.4 D. 3.2
3.2
What type of bond would you expect in a compound of oxygen and sodium?
Ionic bond
Compare the 3 types of bonding on the basis of electron location
Ionic- electrons reside in nonmetal Covalent- equally and unequally shared in bonded and unbonded pairs Metallic- floating around metal
A mixture of atoms of a metal with another element where the mixture has metallic properties is called a(n) ____________
Alloid
Which of the following does NOT exist as a diatomic molecule? A. Argon B. Hydrogen C. Chlorine D. Oxygen
Argon
Which of the following is a nonpolar covalent molecule? A. NaCl B. Br2 C. HCN D. Au
Br2
Explain how it is possible to have a purely covalent bond while it is not possible to have a purely covalent bond.
Cation would need to have no attraction to electrons for the anion to hold the electrons 100% of the time which would make it a noble gas that doesn't bond at all.
A bond that forms between two or more atoms that have high electronegativity is most likely a _____________ bond.
Covalent
The compound of CCl4 is an example of __________ bonding
Covalent
The mobile valence electrons in a metallic bond are said to be _____________
Delocalized
Metallic bonds are __________ (_______________) of atoms
Delocalized (share)
The measure of an atom's ability to attract electrons to itself in a chemical bond is called?
Electronegativity
Chemical bonds between atoms involve the rearrangement of ___________ to maximize stability
Electrons
Chemical bonds between atoms involve the rearranging of ________ to maximize stability
Electrons
The luster or shine seen on most metals is thought to be caused by the movement of ___________
Electrons
The attraction between opposite electrical charges is called a(n) _________________ force
Electrostatic
What do we call the attraction between opposite electrical charges?
Electrostatic force
When an atom bonds, they lose....
Energy
T or F Atoms with fewer than four valence electrons tend to gain electrons when bonding
False
T or F Diatomic molecules such as I2 exhibit ionic bonding
False
T or F Metallic bonding characterized by a loose transfer of electrons between two atoms
False
T or F When atoms bond, they will seek a higher, more stable energy state
False
T or F Because of its high electronegativity, a molecule of fluorine is polar
False (actually nonpolar)
The ratio of cations to anions in an ionic compound is expressed in a chemical formula known as a _____________ unit.
Formula
The ratio of cations to anions in an ionic compound is expressed in a chemical formula known as a(n) _______________
Formula unit
In order to achieve an octet when combining with potassium, an atom of a Group 16 (6A) element would be expected to ___________ electrons.
Gain
An extremely polar bond is an ________ bond
Ionic
Compounds formed by the attraction between oppositely charged ions are held by ________ bonds.
Ionic
The compound Csl is an example of __________ bonding
Ionic
What type of bond would you expect to form between nitrogen and potassium?
Ionic
The compound Fe3Al is an example of ________ bonding
Metallic
Contrast the electrons found in metallic bonds with those in covalent
Metallic bonds- octet not a concern Covalent bonds- achieve octet
An atom becomes more stable by bonding with another atom if the resulting electron configuration is more like that of what group of elements?
Noble gases
Atoms seek to gain, lose, or share electrons in order to achieve the electron configuration of which group of elements?
Noble gases
An ionic bond is between ________ and ___________
Nonmetal and metal
Atoms attain stability by having a full valence shell of electrons according to the ____________________.
Octet rule
When nonmetals chemically combine with each other, they __________ electrons, forming __________ bonds
Sharing, covalent
When atoms bond, they gain...
Stability
In general, how do the stability and energy of bonded atoms compare with that of unbounded atoms?
Stability is higher in bonded but energy lower
Ionic bonds are _______ of atoms
Transform
T or F Completely nonpolar bonds exist
True
T or F Covalently bonded compounds contain one or more pairs of shared electrons
True
T or F Polar covalent bonds result when the atoms sharing the electrons have differing electronegativities
True
T or F Some, but not all, covalent molecules exhibit polarity
True
T or F The compound Na2O exhibit ionic bonding
True
T or F The greater the difference in electronegativity between tow elements, the greater the polarity of the resulting molecule
True
T or F When sodium and chlorine combine to form NaCl, a greater amount of energy is released
True