CHEM 1030 Exam 2- Forbes AU Questions and Answers| Updated

CHEM 1030 Exam 2- Forbes AU
Questions and Answers




Atomic size trend
increases right to left
increases downward
(He smallest)




Principle Quantum Number
indicates the main energy level occupied by the electron
-increases downward
ex. bottom group atomic radius & nuclear charge > top group radius & nuclear
charge




valance electrons charge
weak




ionization energy trend

,increase left to right
increase upward




cations size
smaller (lose valance)




anions size
larger (gain valance)




Zeff
effective nuclear charge
Zeff= Z-S
Z= atomic number
S=inner shell electrons




valence electrons
atom's outermost electrons

,ionization energy (IE)
the energy required to remove one electron from a neutral atom of an element




electron affinity (EA)
adding an electron
-increases upward and left to right




types of bonds
ionic, covalent, metallic




ionic bond
metal + nonmetal
-held together by electrostatic attractions
ex. NaCl, MgO




electrostatic potential energy (Ee1)
strength of ionic attraction
Ee1=2.31 x 10^-19 j x nm (Q1 x Q2/d)
Q1=charge of ion

, Q2=charge of ion
d= addition of two distances




Lattice energy (U)
the energy required to completely separate one mole of a solid ionic compound
into gaseous ions




covalent bond
nonmetal + nonmetal
ex. H2 CO2 H2SO4




metallic bond
metal + metal




naming binary compounds of main group
1. first word is cation
2. second word is anion
-ide
ex. Al2O3 aluminum oxide