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1. 6.022×10232. 24/6.002×10233. 2.5 ×10234. 0.25×1023.​​​​

Answer»

ANSWER :  Option (4) 0.25 × 1023

We know that , 

1 mole i.e 24 g of magnesium consists of 6.022 × 1023 ( Avogadro's Number ) molecules .

So 1 g of magnesium strip will contain 

= 6.022 × 1023 /24 

≈ 1/4 × 1023

= 0.25 × 1023

\(\therefore\)  1 g of magnesium strip will contain 0.25 × 1023 molecules.



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