Question 21

Question

Nitrogen is in group 15. What is the charge of a nitrogen ion?

a
+1
b
-2
c
+3
d
-3
Question 22
Match the molecule or compound to the type of bond found between the elements.

Column A
1.
NaCl:
NaCl
2.
MgBr2

:
MgBr2

3.
CO2

:
CO2

4.
SO2

:
SO2

Column B
a.covalent bond
b.ionic bond

Answer 1

Question 21: Nitrogen is typically in group 15, where it tends to gain three electrons to achieve a full outer shell, resulting in a charge of -3.

The answer is d) -3.

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Question 22: To match the compounds to their bond types:

1. NaCl: This is composed of sodium and chloride ions, which form an ionic bond.

   • Match: 2. NaCl: b. ionic bond

2. MgBr2: This is composed of magnesium and bromide ions, which also form an ionic bond.

   • Match: 2. MgBr2: b. ionic bond

3. CO2: This is composed of carbon and oxygen, which share electrons, forming covalent bonds.

   • Match: 3. CO2: a. covalent bond

4. SO2: This is composed of sulfur and oxygen, which also share electrons, forming covalent bonds.

   • Match: 4. SO2: a. covalent bond

Putting it all together:

• 1. NaCl: b. ionic bond
• 2. MgBr2: b. ionic bond
• 3. CO2: a. covalent bond
• 4. SO2: a. covalent bond