Pangea was a large super continent that existed millions of yearts ago
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Answer:
On the periodic table, metals are separated from nonmetals by a zig-zag line stepping through carbon, phosphorus, selenium, iodine, and radon. ... Elements just to the left of the line may be termed metalloids or semimetals and have properties intermediate between those of the metals and nonmetals.
Explanation:
The inner core us the densest
Lithium
Beryllium
Boron
Carbon
Nitrogen
Oxygen
Fluorine
Neon
All on energy level 2
Fluorine is the answer.<span />