Q. 115 B5.0( 2 Votes )

Express each of t

Answer :

Given that, The diameter of a helium atom = 0.000000022 cm


Standard form = 0.22 × 10-7 cm


= 2.2 × 10-1 × 10-7


Using the law of exponent,


= 2.2 × 10-1-7


= 2.2 × 10-8 cm


The standard form is 2.2 × 10-8 cm


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