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