Exams › SSC CGL (Prelims) › General

Which numerical value is known as Avogadro's constant, honoring the 19th-century Italian scientist Amedeo Avogadro?

1. 6.032 x 10^19
2. 6.012 x 10^21
3. 6.022 x 10^23
4. 6.020 x 10^20

Correct answer: 6.022 x 10^23

Solution

Avogadro's constant (N_A) is defined as 6.022 x 10^23 mol^-1 and represents the number of atoms, molecules, or particles in one mole of a substance. It is a fundamental constant in chemistry and physics. The other options have incorrect mantissa or exponent values.

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