Answer :
Answer:
18
Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas.
Explanation:
hope the answer was helpful......
Answer:
18
Argon is a chemical element with the symbol Ar and atomic number 18. It is in group 18 of the periodic table and is a noble gas.
Explanation:
hope the answer was helpful......