Question

worksheet: chemical bonding - ionic & covalent
remember
ionic bond: between a metal and non - metal (m + nm)
covalent bond: between a non - metal and non - metal (nm + nm)
part 1: determine if the elements in the following compounds are metals or non - metals. describe the type of bonding that occurs in the compound.
compound\telement 1 (metal or non - metal?)\telement 2 (metal or non - metal?)\tbond type
no₂\t\t\tcovalent
nacl\tna = metal\to = non metal\t
so₂\ts = non - metal\ti = non metal\t
pi₃\tp = non - metal\tbr = non metal\t
mgbr₂\tmg = metal\to = non metal\t
cao\tca = metal\to = non metal\t
h₂o\th = metal\to = non metal\t
k₂o\tk = metal\tf = non metal\t
alf₃\tal = non metal\tf = non metal\t
o₂\to = nonmetal\t\t
cucl₂\tcu = non metal\tcl = non metal\t
no₂\tn = non metal\to = non metal\t
co₂\tc = nonmetal\to = non metal\t
hf\th = metal\tf = non metal\t
rb₂s\trb = metal\ts = non metal\t
nbr₃\tn = non metal\tbr = non metals\t
fe₂o₃\tfe : non metals\to = non metal\t
ccl₄\tc = non metals\tcl = non metal\t

Explanation:

Step1: Recall bonding rules

Ionic bonds form between a metal and a non - metal. Covalent bonds form between non - metals.

Step2: Analyze each compound

• $NO_2$: N (non - metal) and O (non - metal), covalent bond.
• $NaCl$: Na (metal) and Cl (non - metal), ionic bond.
• $SO_2$: S (non - metal) and O (non - metal), covalent bond.
• $PI_3$: P (non - metal) and I (non - metal), covalent bond.
• $MgBr_2$: Mg (metal) and Br (non - metal), ionic bond.
• $CaO$: Ca (metal) and O (non - metal), ionic bond.
• $H_2O$: H (non - metal) and O (non - metal), covalent bond.
• $K_2O$: K (metal) and O (non - metal), ionic bond.
• $AlF_3$: Al (metal) and F (non - metal), ionic bond.
• $O_2$: O (non - metal) and O (non - metal), covalent bond.
• $CuCl_2$: Cu (metal) and Cl (non - metal), ionic bond.
• $NO_2$: N (non - metal) and O (non - metal), covalent bond.
• $CO_2$: C (non - metal) and O (non - metal), covalent bond.
• $HF$: H (non - metal) and F (non - metal), covalent bond.
• $Rb_2S$: Rb (metal) and S (non - metal), ionic bond.
• $NBr_3$: N (non - metal) and Br (non - metal), covalent bond.
• $Fe_2O_3$: Fe (metal) and O (non - metal), ionic bond.
• $CCl_4$: C (non - metal) and Cl (non - metal), covalent bond.

Answer:

Compound	Element 1 (metal or non - metal)	Element 2 (metal or non - metal)	Bond Type
$NaCl$	Metal	Non - metal	Ionic
$SO_2$	Non - metal	Non - metal	Covalent
$PI_3$	Non - metal	Non - metal	Covalent
$MgBr_2$	Metal	Non - metal	Ionic
$CaO$	Metal	Non - metal	Ionic
$H_2O$	Non - metal	Non - metal	Covalent
$K_2O$	Metal	Non - metal	Ionic
$AlF_3$	Metal	Non - metal	Ionic
$O_2$	Non - metal	Non - metal	Covalent
$CuCl_2$	Metal	Non - metal	Ionic
$NO_2$	Non - metal	Non - metal	Covalent
$CO_2$	Non - metal	Non - metal	Covalent
$HF$	Non - metal	Non - metal	Covalent
$Rb_2S$	Metal	Non - metal	Ionic
$NBr_3$	Non - metal	Non - metal	Covalent
$Fe_2O_3$	Metal	Non - metal	Ionic
$CCl_4$	Non - metal	Non - metal	Covalent