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The reason the north pole of a bar magnet free to rotate points north is because
Atomic Symbol
A one or two-letter notation representing a chemical element (e.g., O for oxygen, H for hydrogen).
Iron
Iron is a chemical element with the symbol Fe and atomic number 26; it is a metal in the first transition series and is by mass the most common element on Earth, forming much of Earth's outer and inner core.
Atomic Symbol
An abbreviation used to represent an element, based on its name in English or its Latin roots.
Strontium
A soft, silver-yellow, alkaline-earth metal with the symbol "Sr" and atomic number 38, used in fireworks and flares for its bright red coloration.
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