এভুমুকি মাৰএভ’গেড্ৰ’ৰ নীতি
এভ’গেড্ৰ’ ধ্ৰুৱক (Assamese)
1. The Avogadro constant, commonly denoted NA or L, is an SI defining constant with an exact value of 6.02214076×1023 mol−1 (reciprocal moles). It is defined as the number of constituent particles (usually... from wikipedia.org NA, N.A., Na, nA or n/a may refer to: == Chemistry and physics == Sodium, symbol Na, a chemical element Avogadro constant (NA) Nucleophilic addition, a type of reaction in organic chemistry Numerical aperture... from wikipedia.org