Quiz about Chemistry Quiz

Question 1

For the element potassium, how many electrons will it lose or gain to attain a noble gas configuration?

Accepted Answer

Lose 1 electron

Answer

Gain 1 electron

Answer

Lose 2 electrons

Answer

Gain 2 electrons

Question 2

For the element potassium, what noble gas is it now isoelectronic with?

Accepted Answer

Argon

Answer

Neon

Answer

Krypton

Answer

Xenon

Question 3

For the element nitrogen, how many electrons will it lose or gain to attain a noble gas configuration?

Accepted Answer

Gain 3 electrons

Answer

Lose 3 electrons

Answer

Gain 5 electrons

Answer

Lose 5 electrons

Question 4

For the element nitrogen, what charge will it have when it loses or gains those electrons?

Accepted Answer

Nitrogen will have a -3 charge when it gains electrons.

Answer

Nitrogen will have a +3 charge when it gains electrons.

Answer

Nitrogen will have a -3 charge when it loses electrons.

Answer

Nitrogen will have a +3 charge when it loses electrons.

Question 5

For the element nitrogen, what noble gas is it now isoelectronic with?

Accepted Answer

Neon

Answer

Helium

Answer

Argon

Answer

Krypton

Question 6

How many valence electrons are shown in the diagram?

Accepted Answer

6

Answer

16

Answer

7

Answer

2

Question 7

According to the Octet Rule, Nitrogen (N) has ____ valence electrons and forms ___ bonds

Accepted Answer

5, 3

Answer

2, 6

Answer

3, 5

Answer

4, 4

Question 8

The Lewis Dot structure for Oxygen shows ___ valance electrons. Of these, ___ are paired, and ___ are unpaired. Oxygen forms ___ covalent bonds.

Accepted Answer

6, 4, 2, 2

Answer

6, 2, 4, 2

Answer

4, 2, 1, 4

Answer

4, 1, 2, 4

Question 9

Based on the Lewis Dot Structure for the element Oxygen, how many covalent bonds would the O₂ molecule have? The Oxygen molecule (O₂) make up approximately 19% of our atmosphere.

Accepted Answer

2

Answer

1

Answer

3

Answer

4

Question 10

Choose the correct shape for this molecule:

Accepted Answer

Bent

Answer

Trigonal planar

Answer

Trigonal pyramidal

Answer

Linear

Question 11

Choose the correct shape for this molecule:

Accepted Answer

Linear

Answer

Trigonal planar

Answer

Bent

Answer

Tetrahedral

Question 12

Choose the correct shape for this molecule:

Accepted Answer

Tetrahedral

Answer

Trigonal pyramidal

Answer

Bent

Answer

Trigonal planar

Question 13

What is the correct Lewis Dot Structure for ammonia NH3

Accepted Answer

Option C is correct

Answer

A.

Answer

B.

Answer

D.

Question 14

What is the correct formula for this molecule?

Accepted Answer

SiF4

Answer

Si4F

Answer

SiF

Answer

Si4F4

Question 15

What is the VSEPR theory used to predict?

Accepted Answer

Molecular Shape

Answer

Bond Strength

Answer

Polarity

Answer

Electronegativity

Question 16

How many valence electrons are shown in the diagram?

Accepted Answer

6

Answer

16

Answer

7

Answer

2

Question 17

How many valence electrons in this structure?

Accepted Answer

7

Answer

6

Answer

5

Answer

4

Question 18

What is the number of valence electrons for Strontium?

Accepted Answer

2

Answer

1

Answer

4

Answer

7

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