What is the value of Avogadro Number?

**A.**5.022 × 10^23**B.**6.022 x 10^23**C.**7.022 x 10^23**D.**6.05 x 10^23

**B. 6.022 x 10^23 **

The number of units in one mole of any substance is known as Avogadro’s constant or Avogadro number. The value Avogadro’s number is fixed, and the value is NA=6.022 x 10^23.