Worksheet on Radicals (Cations and Anions)

Worksheet  on radicals [Cations and Anions]                           Name……………………………………………..Class/Sec……………………….…Date………………….

Cations/ Basic radicals

Monovalent cations	Bivalent cations
Monoatomic Cations    H+         hydrogen Li+          lithium Na+        sodium K+           potassium Rb+        rubidium Cs+         cesium Ag+         silver Cu+       copper(I) or cuprous Hg22+     mercury(I)  or  mercurous Au+       gold(I) or aurous Polyatomic Cations NH4+     ammonium H3O+     hydronium	Mg2+     magnesium Ca2+      calcium Sr2+          strontium Ba2+         barium Zn2+        zinc Cd2+      cadmium Be2+        beryllium ion Cu2+       copper(II)  or cupric Fe2+         iron(II)  or ferrous Sn2+        tin(II)  or  stannous Mn2+      manganese(II)  or manganous Hg2+       mercury(II)    or  mercuric Pb2+         lead(II)  or   plumbous Cr2+        chromium(II)  or chromous
Trivalent cations	Tetravalent cations
Al3+       aluminum Fe3+       iron(III)   or   ferric Cr3+       chromium(III)  or chromic Mn3+     manganese(III)  or manganic Co3+       cobalt(III)  or cobaltic Au3+      gold(III)  or auric	Sn4+       tin(IV)  or  stannic Pb4+        lead(IV)  or plumbic

Anions   /Acidic radicals

Monovalent anions	Bivalent anions
H-  hydride      F- fluoride     Cl- chloride    Br- bromide  I- iodide OH-          hydroxide CN-          cyanide O22-         peroxide NO2-      nitrite                        NO3-  nitrate ClO2-     chlorite ClO3-    chlorate                     IO3¯ iodate          BrO3¯ bromate CH3COO- or C2H3O2-   acetate MnO4-  permanganate CHO2-   formate or HCOO-1 HCO3-  hydrogen carbonate or bicarbonate HSO3-  hydrogen sulphite  or bisulphite HSO4-   hydrogen sulphate or bisulphate H2PO4-  dihydrogen phosphate	O2-              oxide S2-           sulphide CO3 2-       carbonate C2O42-       oxalate SO32-       sulphite SO42-       sulphate CrO42-      chromate Cr2O72-   dichromate HPO4 2-    hydrogen phosphate
Triivalent anions	Tetravalent anions
N3-               nitride P3-                 phosphide PO33-          phosphite                 PO43-          phosphate	C4- (C22-)     carbide [Fe(CN)6]-4

Metals with more than one ion

Element	Ion	Stock system	Classical (ous, ic) System
Chromium	Cr2+ Cr3+	chromium(II) chromium(III)	chromous chromic
Cobalt	Co2+ Co3+	cobalt(II) cobalt(III)	cobaltous cobaltic
Copper	Cu+ Cu2+	copper(I) copper(II)	cuprous cupric
Iron	Fe2+ Fe3+	iron(II) iron(III)	ferrous ferric
Lead	Pb2+ Pb4+	+ lead(II) lead(IV)	plumbous plumbic
Manganese	Mn+2 Mn4+ Mn3+ Mn5+ Mn6+ Mn7+	manganese(II) manganese(IV) manganese(III) manganese(IV) manganese(VI) manganese(VII)	Manganous manganic -        [Not possible] -       [Not possible] -       [Not possible] -       [Not possible]
Mercury	Hg22+ Hg2+	mercury(I) mercury(II)	Mercurous mercuric
Tin	Sn2+ Sn4+	tin(II) tin(IV)	Stannous stannic
Gold	Au+ Au3+	gold(I) gold(III)	Aurous  auric

·         Prefixes Used to Indicate Number in a Name Involving Two Non-Metals

mono– 1                      hexa– 6

di–       2                      hepta– 7

tri–      3                      octa– 8

tetra– 4                      nona– 9

penta–  5                     deca– 10

·         These prefixes are used in naming binary compounds involving two non–metals. Example include P₂O₅, Cl₂O, NO, N₂O, NO₂, N₂O₅, PCl₃, PCl₅, SO₂, SO₃, SiO₂.

·         Sometimes metal ions are involved in a Greek prefix name, but these are less common. Examples include UF6, SbCl3,

SbCl₅, OsO₄, BiCl₃.

·         CO is carbon monoxide, NOT carbon monooxide. As₄O₆ is tetrarsenic hexoxide, NOTtetraarsenic hexaoxide.

·         Acid Names – add the word acid to each name when saying or writing.

·                                                              Name when a pure compound      Name when dissolved in water      

                                                                                   

HF       hydrofluoric acid                   hydrogen fluoride                             HNO₃ nitric acid

HCl     hydrochloric acid                 hydrogen chloride                            HNO₂ nitrous acid

HBr     hydrobromic acid                 hydrogen bromide                            H₂SO₄ sulfuric acid

HI        hydroiodic acid                      hydrogen iodide                     H₂SO₃ sulfurous acid

HCN   hydrocyanic acid                   hydrogen cyanide                 H₃PO₄ phosphoric acid

H₂S      hydrosulfuic acid                   hydrogen sulphide                H₂CO₃ carbonic acid

       

          Acetic acid  CH₃COOH)

What are the Latin Names of  Elements?

Scientists have adopted certain conventions regarding the chemical symbols for various elements. The symbol is the short form or abbreviated name of the element. Each element has a chemical symbol that is unique to it. An atom of an element is denoted by this symbol. For example, the symbol for Carbon is C.

Many elements have their symbol derived from either the first letter [e.g., H for Hydrogen] or the first two letters [e.g., He for Helium] of their names. A few elements have symbols derived from their Latin names as given in the table below.

Element	Symbol	Latin Name
Antimony	Sb	Stibium
Copper	Cu	Cuprum
Gold	Au	Aurum
Iron	Fe	Ferrum
Lead	Pb	Plumbum
Mercury	Hg	Hydragyrum
Potassium	K	Kalium
Silver	Ag	Argentum
Sodium	Na	Natrium
Tin	Sn	Stannum
Tungsten	W	Wolfram[German name]

 

Ionic Compound Formula Writing Worksheet

QUESTION-1

Write chemical formulas for the compounds in each box.  The names are found by finding the intersection between the cations and anions.  Example:  The first box is the intersection between the “zinc” cation and the “chloride” anion, so you should write “ZnCl₂”, as shown.

	zinc	iron (II)	iron (III)	Calcium	silver	lead (IV)
chloride	ZnCl2
acetate
nitrate
oxide
nitride
sulphate

QUESTION-2

Write the formulas for the following compounds:

1)         copper (II) chloride _____________________2)       lithium acetate _______________________

3)         Ammonium nitrate______________                4)  manganese (IV) nitride _________________

5)         Magnesium oxide _____________                  6)  sodium sulphate ________________________

7)         aluminum bromide _______________            8)  potassium permanganate __________________

9)         Potassium cyanide ________________          10)      tin (II) sulphite ______________________

11)       Barium fluoride _________________          12)        ammonium nitrite ___________________

Question 3

Give the name  or formula of the following ionic compounds:

1)         Na2CO3 ­­­­­____________________ 2)         NaOH ______________________ 3)         MgBr2  ______________________ 4)         KCl  ________________________ 5)         FeCl2 _______________________ 6)         FeCl3 _______________________ 7)         Zn(OH)2  _____________________ 8)         Be2SO4  _____________________ 9)         CrF2   ________________________ 10)       Al2S3  _______________________ 11)       PbO  ________________________ 12)       Li3PO4  ______________________ 13)       CaS   _________________________ 14)       Ca3N2   ______________________

15)       Mg3P2   ______________________ 16)       Mg(NO2)3   ____________________ 17)       Ag2SO3  ______________________ 18)       NH4OH  ______________________ 19)       Al(CN)3 ____________________ 20)       Ca(CH3COO)2   ________________ 21)       sodium phosphide _____________ 22)       magnesium nitrate _____________ 23)       lead (II) sulphite ___________ 24)       calcium phosphate _____________ 25)       ammonium sulphate _____________ 26)       silver cyanide _________________ 27)       aluminum  sulphide ____________ 28)       beryllium chloride ______________

29)       copper (I) arsenide _____________ 30)       iron (III) oxide _________________ 31)       Ferric nitride _________________ 32)       iron (II) bromide  _______________ 33)       Barium phosphate  ________ 34)       calcium oxide _________________ 35)       magnesium acetate  ____________ 36)       aluminum sulphate  ______________

37)       copper (I) carbonate ____________ 38)       barium oxide __________________ 39)       ammonium sulphite____________ 40)       silver bromide _________________