History
Russian chemist who arranged the elements by increasing atomic mass
Mendeleev
Which element has a bigger atomic radius Fluorine or Iodine?
Iodine
Shared electrons
What is ionic bonding?
Transfer of electrons (a full positive and full negative)
How many orbitals hybridized for sp2?
3 orbitals (1s and 2p orbitals)
Modern periodic table is arranged according to
Atomic number
What is electron affinity?
Energy change when an electron is acquired
What bond required more energy to break, a single bond or a double bond?
Double bond
When do ionic compounds conduct electricity?
Molten (melted) state or dissolved
What is stronger intermolecular or intramolecular forces?
Intramolecular
What groups make up the d block?
Groups 3-12
What ion has a larger radius, oxygen or lithium?
Oxygen ion
What are all 7 diatomic elements?
HOFBrINCl
Hydrogen, Oxygen, Fluorine, Bromine, Iodine, Nickle and Chlorine
How many valence electrons does Selenium have?
6- Group 16 element
What is the net dipole of CCl4?
The molecule is nonpolar so there is no net dipole moment
What is the name of Period 6 elements?
Ionization- energy needed to remove an electron
Electronegativity- tendency to attract an electrons when in a compound
What is the END range for covalent bonds?
0-1.7
Why are metals good conductors or heat and electricity?
Electrons are delocalized so electrons are free to move
How many atoms and how many lone pairs are there for trigonal pyramidal?
3 atoms and 1 lone pair
What is periodic law?
Physical and chemical properties of elements are periodic functions of their atomic number
Why does ionization energy increase from left to right across a period?
Nuclear charge increases but shielding stays the same
1. Count electrons
2. Set up skeletal structure
3. Give all atoms an octet
4. Give double and triple bonds
5. Recount electrons
What is enthalpy of vaporization?
Amount of heat required to vaporize a metal
What is the net dipole moment of SO2