Exploring Ions in Integrated Physics & Chemistry

If you have a table that seats six people and 25 guests, how many full tables will you have?

• Six full tables

• Three full tables

• Four full tables

• Five full tables

What do elements strive to achieve in their outermost energy level?

• No electrons

• A full valence shell

• Two electrons

• A single electron

What is the octet rule?

• Atoms are stable with twelve electrons in their valence shell

• Atoms are stable with ten electrons in their valence shell

• Atoms are stable with eight electrons in their valence shell

• Atoms are stable with two electrons in their valence shell

Which elements are stable with just two electrons in their valence shell?

• Helium and Hydrogen

• Oxygen and Nitrogen

• Carbon and Silicon

• Sodium and Magnesium

How does sodium achieve a full valence shell?

• By losing seven electrons

• By gaining one electron

• By losing one electron

• By gaining seven electrons

What charge does a sodium ion have after losing one electron?

• -2

• +2

• -1

• +1

How does phosphorus achieve a full valence shell?

• By losing five electrons

• By losing three electrons

• By gaining five electrons

• By gaining three electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What charge does a phosphorus ion have after gaining three electrons?

• -2

• +3

• -3

• +2

How many valence electrons does barium have?

• Three

• Four

• Two

• One

What charge does an iodine ion have after gaining one electron?

• -2

• +1

• -1

• +2