Question

1. complete the following chart about ionic and covalent compounds

chemical formula\tcompound name\tionic/covalent
cao\tcalcium oxide\tionic
na₃p\tsodium phosphide\tionic
\tcarbon monoxide\tcovalent
h₂o\twater\tcovalent
mgco₃\tmagnesium carbonate\tionic

1. what is the formula of the ionic compound formed between :

a. k and o : k₂o\tratio of k to o is 2 :1 ( this is done for you)
k⁺ o⁻²
b. ca and s : \tratio of ca to s is

c. al and f : \tratio of al to f is

1. prefixes used to name covalent compounds:

1: di\t2: tri\t3: \t4: \t5: \t6:

1. rules for naming ionic compounds:

a. between metal and non metal/ polyatomic ion
b. 2nd element will end in -ide
c. do not use a prefix
d. see if there is any d block element and use a roman numeral
e. see if there is any polyatomic ion

1. rules for naming covalent compounds

a. between two non- metals
b. 2nd element will end in -ide
c. use a prefix
d. no polyatomic ions

Explanation:

Step 1: Solve part b (Ca and S)

Calcium (Ca) has a charge of \( +2 \) ( \( \text{Ca}^{2+} \) ) and sulfur (S) has a charge of \( -2 \) ( \( \text{S}^{2-} \) ). To balance the charges, the ratio of Ca to S is \( 1:1 \). The formula is \( \text{CaS} \).

Step 2: Solve part c (Al and F)

Aluminum (Al) has a charge of \( +3 \) ( \( \text{Al}^{3+} \) ) and fluorine (F) has a charge of \( -1 \) ( \( \text{F}^{-} \) ). To balance the charges, we need 3 F⁻ ions for 1 Al³⁺ ion. The ratio of Al to F is \( 1:3 \), and the formula is \( \text{AlF}_3 \).

Step 3: Prefixes for covalent compounds

The correct prefixes for covalent compounds are: 1: mono, 2: di, 3: tri, 4: tetra, 5: penta, 6: hexa. (Note: The original 1 and 2 in the question had errors; correct 1 is "mono", 2 is "di".)

Step 4: Chart completion (question 3)

• \( \text{CaO} \): Ionic (metal + non - metal)
• \( \text{Na}_3\text{P} \): Name is Sodium phosphide, Ionic
• Carbon monoxide: Formula \( \text{CO} \), Covalent (two non - metals)
• \( \text{H}_2\text{O} \): Name is Water (or Dihydrogen monoxide), Covalent
• Magnesium carbonate: Formula \( \text{MgCO}_3 \), Ionic (metal + polyatomic ion \( \text{CO}_3^{2 - } \))

Answer:

s:

Question 4

b. Formula: \( \text{CaS} \), Ratio: \( 1:1 \)
c. Formula: \( \text{AlF}_3 \), Ratio: \( 1:3 \)

Question 5

1: mono, 2: di, 3: tri, 4: tetra, 5: penta, 6: hexa

Question 3 (Completed Chart)

Chemical formula	Compound Name	Ionic/Covalent
\( \text{Na}_3\text{P} \)	Sodium phosphide	Ionic
\( \text{CO} \)	Carbon monoxide	Covalent
\( \text{H}_2\text{O} \)	Water (Dihydrogen monoxide)	Covalent
\( \text{MgCO}_3 \)	Magnesium carbonate	Ionic