Question

What is the number of significant figure in the Avogadro’s number?

a)  1

b)  2

c)  3

d)  4​

Answer 1

Answer:

6.022×10²³the number of significant figure in the Avogadro’s number?

Answer 2

Avogadro's number is known to ten significant digits: NA=6.022141527×1023. However, you only need to know it to three significant figures: NA≈6.02×1023.