ANSWER: Neither 1 nor 2
Explanation:
- New horizons mission has captured images of frozen nitrogen glaciers on Pluto.
- Since water ice is less dense than nitrogen-dominated ice, scientists believe these water ice hills are floating in a sea of frozen nitrogen and move over time like icebergs in Earth’s Arctic Ocean.
- Atomic number of Nitrogen is 7. Melting Point of nitrogen is -210°C.
- Liquid nitrogen can easily be converted to a solid by placing it in a vacuum chamber.
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