5sar wrote:
Cimorene wrote:
Our next subject is Chemisty!
Question 3:
Which of these elements is NOT a noble gas? - Krypton, Argon, Helium, Chlorine or Oganesson?
chlorine
Our next subject is Chemisty!
Question 3:
Which of these elements is NOT a noble gas? - Krypton, Argon, Helium, Chlorine or Oganesson?