Basic Concepts of Chemical Bonding Cover 8 1 to 8 7 EXCEPT 1 Omit Energetics of Ionic Bond Formation Omit Born-Haber Cycle 2 Omit Dipole Moments
Claim: chemical bonds are what hold atoms together to form the more complicated aggregates that we know as molecules and extended solids
The basic requirement being that each bonded atom gets an octet of electrons Lewis representations of a few molecules/ ions are given in Table 4 1 Table 4 1
1) Draw skeletal structure with the central atom being the least electronegative element 2) Sum the valence electrons Add 1 electron for each
atom of oxygen (H2O) • The attraction between atoms or ions to form a molecule is called chemical bond • These molecules or ions aggregate in large
together by strong attractive forces called chemical bonds These bonds are formed through the interaction of valence electrons of the combining atoms
?Use bond enthalpies to estimate enthalpy changes for reactions involving gas-phase reactants and products Chemical Bonds Three basic types of bonds:
Our essential procedure in tracing the connections between these types of bonding is to follow the valence electrons In covalent bonding the bonding pairs of
surrounding atoms with the nucleus of the central atom The angles shown in Figure 10 2 are ideal bond angles, determined by basic geometry alone
Basic Concepts of Chemical Bonding Cover 8 1 to 8 7 EXCEPT 1 Omit Energetics of Ionic Bond Formation The pair of electrons in a polar covalent bond are
➢Use bond enthalpies to estimate enthalpy changes for reactions involving gas- phase reactants and products Chemical Bonds Three basic types of bonds:
The answers to these questions are of fundamental importance to the study of chemistry The bond is called a chemical bond Thus a chemical bond may be