1/23 - Valence Electrons and Reactivity (lesson)

Multiple Choice

How many valence electrons are in this atom?

• 8

• 3

• 13

• 2

Multiple Choice

How many valence electrons are in this atom?

• 5

• 2

• 7

• 1

Multiple Choice

How many valence electrons are in this atom?

• 1

• 0

• 2

• 10

Multiple Choice

How many valence electrons are in this atom?

• 4

• 0

• 2

• 1

Multiple Choice

Is this atom stable?

• yes

• no

• maybe

Multiple Choice

Is this atom stable?

• yes

• no

• maybe

Multiple Choice

On the periodic table, reactivity is determined by the ______________.

• groups

• periods

Multiple Choice

Which group is the most stable?

• 17

• 1

• 2

• 18

Multiple Choice

What determines the reactivity of an element?

• Size of its nucleus

• Number of total electrons

• Number of valence electrons

• Number of shells

Multiple Choice

Describe this element.

• Highly reactive metal

• Highly reactive nonmetal

• Stable

• Less stable non metal

Multiple Choice

Sodium has one valence electron, so it is considered

• Not Reactive, because it has a full outer shell

• Medium Reaction, because it only needs to lose one electron to be full

• Highly Reactive, because it only needs to lose one electron to be full

• Stable, because it only need to lose one electron to be full

Multiple Choice

The most stable group on the periodic table and why.

• Group 8, because they have a full outer shell

• Period 8, because they have a full outer shell

• Group 18, because they have a full outer shell.

• Group 18 because they are one away from being full and are super excited about it.

Multiple Choice

A Student drew atomic models of four atomic models. Based on the drawings, which one is the least reactive?

• Chlorine, because it has three energy levels with seven electrons in the third level

• Gallium, because it has four energy levels with three electrons in the fourth level

• Neon, because it has two energy levels with eight electrons in the second level

• Tin, because it has five energy levels with four electrons in the fifth level

Multiple Choice

Which of the following elements is the most reactive?

• Helium

• Oxygen

• Bromine

• Sulfur

Multiple Choice

What do all of these elements have in common?

• They all have 3 valence electrons

• They all have 3 protons

• They all have 3 energy levels

• They all have 3 neutrons

Multiple Choice

Which element is least reactive?

• A

• B

• C

• D