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Question
Find the number in standard form for the following expansions:
The radius of a hydrogen atom is 2.5 × 10−11 m
Sum
Solution
Radius of a hydrogen atom = 2.5 × 10−11 m
= `2.5 xx 1/10^11 "m"`
= `2.5/10^11 "m"`
= 0.000000000025 m
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Chapter 1: Numbers - Exercise 1.6 [Page 45]
