Question

Which one of the following is the true with respect to Avogadro's number?

• A. It gives the number of particles in 1 mole of the substance
• B. It is represented as N
• C. The value of Avogadro's number is $6.023\times {10}^{23}$
• D. The value of Avogadro's number remains constant

Answer 1

Answer: (A), (B), (C), (D)

The correct options are
A It gives the number of particles in 1 mole of the substance
B It is represented as N
C The value of Avogadro's number is $6.023\times {10}^{23}$
D The value of Avogadro's number remains constant

One mole of a substance contains Avogadro's number of particles, i.e. $6.022\times {10}^{23}$ particles. Avogadro's number is represented by 'N' and its value reamins a constant, always.