Odd One Out: Chemistry Groups (ISC 12)

Exercise and reference answers

Questions

1. Items

   1. Calcium
   2. Lithium
   3. Sodium
   4. Potassium

   Odd item

   Calcium

2. Items

   1. Fluorine
   2. Argon
   3. Chlorine
   4. Bromine

   Odd item

   Argon

3. Items

   1. Helium
   2. Neon
   3. Nitrogen
   4. Argon

   Odd item

   Nitrogen

4. Items

   1. Methane
   2. Ethane
   3. Propane
   4. Ethene

   Odd item

   Ethene

Instructions

Tap the item that does not belong.