Question 1

Which of the following elements has the greatest number of valence electrons?

Accepted Answer

Chlorine (Cl)

Question 2

For a main group element, how do you determine the number of valence electrons?

Accepted Answer

By the group number on the periodic table

Question 3

Which of the following is the correct Lewis Dot Symbol for Tellurium (Te)?

Accepted Answer

Te with 6 dots

Question 4

When drawing a Lewis Dot Symbol, where should you start placing the first valence electron?

Accepted Answer

On any side of the element symbol

Question 5

How many valence electrons does Strontium (Sr) have?

Accepted Answer

$$2$$

Question 6

Which element would have the following Lewis Dot Symbol: Pb with 4 dots?

Accepted Answer

Lead (Pb)

Question 7

What is the maximum number of valence electrons an atom can have?

Accepted Answer

$$8$$

Question 8

Which of the following elements is most likely to form an ion with a $$-1$$ charge based on its valence electrons?

Accepted Answer

Chlorine (Cl)

Question 9

If an element is in group 2A, how many valence electrons does it have?

Accepted Answer

$$2$$

Question 10

Which statement best describes the pattern of valence electrons for transition metals?

Accepted Answer

Their valence electron arrangements cause unpredictable patterns

Question 11

Radon (Rn) is in group 8A. What is its Lewis Dot Symbol?

Accepted Answer

Rn with 8 dots

Question 12

Which of the following elements is most likely to be chemically inert due to its valence electron configuration?

Accepted Answer

Radon (Rn)

Question 13

A student draws the Lewis Dot Symbol for Sodium (Na) as Na with 7 dots. What is the error in this representation?

Accepted Answer

Sodium should have only 1 valence electron

Question 14

Which element would have the following Lewis Dot Symbol: S with 6 dots?

Accepted Answer

Sulfur (S)

Question 15

If an atom has 7 valence electrons, which group is it most likely found in?

Accepted Answer

Group 7A

Question 16

Which of the following is the correct order for pairing electrons when drawing Lewis Dot Symbols?

Accepted Answer

Add one electron to each side before pairing

Question 17

Which element is most likely to lose two electrons to achieve a stable configuration?

Accepted Answer

Strontium (Sr)

Question 18

A main group element in group 5A will have how many valence electrons?

Accepted Answer

$$5$$

Question 19

Which of the following elements is most likely to gain two electrons when forming an ion?

Accepted Answer

Sulfur (S)

Question 20

Which of the following statements about Lewis Dot Symbols is correct?

Accepted Answer

They represent the valence electrons of an atom

Lewis Dot Symbols and Valence Electrons: Study Notes for GOB Chemistry

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