Unit 1 Flashcards
What is an ionic bond
- A chemical bond formed by electrostatic attraction between positive and negative ions
- Transferring of electrons
- 7 Types
What is a covalent bond
Sharing of electrons
Define electronegativity
A measure of the ability of an atom in a molecule to draw bonding electrons to itself
Draw the electronegativity line
Nonpolar Partial charge Full charge
No meaningful Polar
charge
What does isoelectric mean
The same
What are the two exceptions to the octet rule
- Hydrogen- no p orbital-> 2 electrons filled-> duet rule
- Boron-> 6 electrons filled
What is a polar covalent bond
One in which the bonding electrons spends more time near one Atom
What is the formal charge formula
FCcentral.atom=#of valence electrons-(#of bonding electrons/2)- #of lone pair electrons
What is resonance
Delocalized bonding
What is the bond angle for linear geometry
180
What is the bond angle for Trigonal planar geometry
120
What is the bond angle for tetrahedral geometry
109.5
What is the bond angle for trigonal bypyramidal geometry
90 and 120
What is the bond angle for octahedral geometry
90
The energy required to break a chemical bond is called what
Bond energy
Types of Bonds- location in 3D space
1- single- lowercase sigma- orbitals overlap head to head along bond axis
2- double- pi- orbitals overlap side to side above and below bond axis
the number of electrons lost or gained by an Atom is determined by its need to be isoelectronic with a noble gas… Why?
It needs to achieve Psuedo
What is the goal of bonding
To fill the outer shell or to fill orbitals
What type of property is electronegativity
Physical
What explains why Atoms share
Electronegativity
Nonpolar bonds contain what special type of group of atoms
Diatoms
Metals are isoelectric with the noble gas in the _____ Period
Preceding
What types of charges do ionic bonds have
Full
How many degrees do you lose when you add a loan pair
2.5
Why don’t solids conduct electricity
Because they have nothing to bond with. It isn’t dissolved with any other substance.
Why is water a bad conductor of electricity
Once it becomes pure, its impurities are gone. Ions can not transfer now because of the lack of ions
Why don’t some of the liquids conduct electricity
The polarity is below 1.8
