Ch 2 Flashcards
What are the three models of chemical bonding?
Ionic, covalent and metallic
What is the name of the quantum number n?
principal (energy level-shell like KLMN)
What is the name of the quantum number l?
subsidiary (orbitals like spdf)
What is the name of the quantum number m_l?
magnetic
What is the name of the quantum number m_s?
spin
What is an atom made out of?
electrons, protons and neutrons
What is atomic number?
of electrons of neutral species
the number of protons in nucleus of atom, or number of electrons of neutral species
Isotope
element with 2 or more different atomic masses (the same
element which contain equal number of protons but different number
of neutrons)
atomic mass unit
measure of atomic mass
How many electrons in the subshell s?
2
How many electrons in the subshell p?
6
How many electrons in the subshell d?
10
How many electrons in the subshell f?
14
What is a non-directional (ionic/metallic) bond?
A bond where the magnitude is equal in all directions
What kind of bond do polymers have/form?
covalent
What kind of bonds do ceramics have/form?
ionic bonding
What is a directional bond (covalent)?
The atoms prefer specific orientations in space
What are valence electrons?
Those in unfilled shells
if F_NET = F_Attract + F_Repul, what does E_Net=
E_NET = E_Attract + E_Repul
Which plot shows high melting temperature and why?
Melting temperature (T_m) is larger if E_0 is larger and the area
under the energy-distance plot for infinite separation is larger
