ions. ions atoms of a given element that differ in the number of electrons, …and consequently in...
TRANSCRIPT
IonsIonsatoms of a given element that
differ in the number of electrons,
…and consequently in overall charge.
# of p+
# of no
# of e-
# of p+
# of no
# of e-
ChlorineChlorine…the neutral atom ChlorineChlorine…the ion
17
ClClChlorine
34.453
11
NaNaSodium
22.990
# of p+
# of no
# of e-
# of p+
# of no
# of e-
SodiumSodium…the neutral atom SodiumSodium…the ion
Octet Rule
• The octet rule says that atoms tend to gain, lose or share electrons so as to have eight electrons in their outer electron shell.
Transition Metal IonsTransition Metal IonsTransition Metal Ions are different than other metal ions.
1) There are no predictable patterns that can be used to determine their ionic charges
Yes, they are all positive but…
2) A good number of transition metal elements possess an ability to have more than one positive ion.
1) There are no predictable patterns that can be used to determine their ionic charges
Fe +2Mn +7 Co +2
2) A good number of transition metal elements possess an ability to have more than one positive ion.
Fe +3Fe +2
2) A good number of transition metal elements possess an ability to have more than one positive ion.
Al +3
2) A good number of transition metal elements possess an ability to have more than one positive ion.
Mn +3Mn+2 Mn +4 Mn +5
Mn +7
Working with more Ions (practice)
name
atomic
(ionic)
notation
# of p+ # of e- # of no
the ion of magnesium
the ion of oxygen
the ion of fluorine
the ion of lithium
Review problemDraw the following ions and (neutral) atoms using the Octet Rule/Model of the atom. (Valence Shell Only)
a) Ne o
b) Mg +2
c) Na +1
d) N -3
Naming IonsNaming IonsPredictable Metal Ions, Unpredictable
Transition Metal Ions, and Nonmetal Ionsare named differently
Naming IonsNaming IonsNaming Ions
Nonmetal Ions Metal Ions
Non Transition Metal Ions Transition Metal Ions
metal ions vs. nonmetal ionsNaming IonsNaming Ions
keep the atoms elemental name …add the word ion
keep the atoms elemental root …drop the ending…add the suffix –ide. (using the word ion is redundant and not acceptable when naming nonmetal ions)
TheStock System
Naming Naming Transition MetalTransition Metal Ions Ions
-Use the complete elemental name (as expected).
-Use roman numerals to designate the ionic charge or oxidation number of the transition metal ion. -Use the word ion to designate its ionic nature.
Transition Metal IonsTransition Metal Ions
Cu +2 ____________
Mn +5 ____________
Mn +7 ____________
Fe +2 ____________
Fe +3 ____________
Cu +1 ____________