The Diameter Of A Helium Atom Is 1.2 A. Express This Diameter In Pm. How Many Of These Atoms Can Be Aligned In A 0.50 Mm Wide Pen Dot?

the diameter of a helium atom is 1.2 A. Express this diameter in pm. How many of these atoms can be aligned in a 0.50 mm wide pen dot?

2.2 million

Explanation:

multiply 1.2 0.50


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