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Q: The basic SI unit of the amount of substance is represented by :
  • A. K
  • B. S
  • C. CD
  • D. Mole
Correct Answer: Option D - The mole is the fundamental unit of amount of a substance in the International system of Units (SI). It is defined as exactly 6.02214076×10²³ particles per mole which may be atoms, molecules. This number is the fixed numerical value which is known as Avogadro constant, no and when expressed in the unit mol⁻¹
D. The mole is the fundamental unit of amount of a substance in the International system of Units (SI). It is defined as exactly 6.02214076×10²³ particles per mole which may be atoms, molecules. This number is the fixed numerical value which is known as Avogadro constant, no and when expressed in the unit mol⁻¹

Explanations:

The mole is the fundamental unit of amount of a substance in the International system of Units (SI). It is defined as exactly 6.02214076×10²³ particles per mole which may be atoms, molecules. This number is the fixed numerical value which is known as Avogadro constant, no and when expressed in the unit mol⁻¹