Atoms and Periodic Table (8.5ABC)

I have four electron shells and two valence electrons. Who am I?

• Calcium

• Gallium

• Silicon

• Nitrogen

I have 1 valence electron and 1 electron shell. Who am I?

• Helium

• Hydrogen

• Oganesson

• Potassium

I have three valence electrons and two electron shells, who am I?

• Magnesium

• Fluorine

• Boron

• Manganese

I have seven valence electrons and three electron shells, who am I?

• Chlorine

• Nihonium

• Bromine

• Lithium

I have two electron shells and six valence electrons. Who am I?

• Neon

• Sulfur

• Oxygen

• Barium

Tags

NGSS.MS-PS1-1

Which direction do periods travel?

• Up and down

• Left to right

• Horizontal

• Vertical

Which direction do groups travel?

• Up to down

• Left to Right

• Horizontal

• Vertical

I am located in Group 15, Period 2. Who am I?

• Nitrogen

• Phosphorus

• Strontium

• Argon

I am located in Group 18, Period 1. Who am I?

• Hydrogen

• Krypton

• Helium

• Lanthanum

Which element below is the MOST reactive?

• Potassium

• Calcium

• Neon

• Silicon