All are gases so no visible reaction persay, unless in closed quarters and then massive pressure.
Answer:
1) the mantle is less dense than the core but more dense than the crust.
Answer:
<h2>D. Krypton (Kr)</h2>
<u>Explanation:</u>
because
Neon and Krypton, both are belongs to Inert or Noble gas Group
Answer:
mirrors and metal thermometers
Explanation:
ooga booga
