Types of INTRAmolecular Bonds/Forces
A covalent bond forms between a __________________ and a ____________________.
nonmetal and nonmetal
Metallic bonding occurs between...
Two metals
Polar or Nonpolar?
O2
nonpolar
True
T or F? Flourine is the LEAST electronegative element.
False
What are the 3 types of INTRAmolecular Bonds/Forces
Ionic, Covalent, Metallic
A metallic bond between two different metals is called
An Alloy
Polar or Nonpolar?
HCl
Polar
What is the trend for electronegativity?
Increases UP and to the RIGHT
OR
Decreases DOWN and to the LEFT
Which group is excluded from all trends except atomic radius?
Noble Gases/Group 18
charges that result between the exchange of electrons
How are metallic bonds formed?
Through the bonding of a sea of electrons and the nucleus of the metal
Which element would receive a partial POSITIVE charge in the following bond?
CN
Carbon
What is the atomic radius?
The size of an atom
Give the trend for atomic radius
increases down and to the left
OR
decreases up and to the right
What are the two types of Ions and what charges do they have?
Cation - positive
Anion - negative
What typically makes alloys stronger than their pure metal forms?
The difference in sizes between metals prevents shifting between atoms
What is the name of the arrow assigned to a molecule with polarity and which direction does it point?
Dipole Moment and it points towards the MORE electronegative element
What is the electron affinity of an atom?
The amount of energy released when an electron attaches to an atom.
How is electron affinity different from electronegativity?
Electron affinity is the amount of energy released when an electron attaches whereas electronegativity is the tendency of an atom to attract electrons towards itself.
How is a metallic bond different than an ionic bond?
Ionic bonds form because of the exchange of electrons that result in charge, whereas metallic bonds form between the sea of electrons attracting to the positive nucleus
What are the two types of Alloys and how do you know which metals will form which types of alloy?
Interstitial and substitutional alloys and they are determined by size of the metals involved
Polarity: Unequal sharing of electrons
The unequal sharing is a result in a difference in electronegativity.
What is electronegativity and why does it increase as you move UP a group?
Electronegativity is the tendency of an atom to attract electrons towards itself and it increases up a group because the distance to the nucleus is shorter.
What is Ionization energy and give an example of a group with a LOW FIRST ionization energy but a HIGH SECOND ionization energy.
Ionization energy is the energy required to remove an electron from an atom. Any Group 1 metal.