Thus atomic mass is the relative atomic mass of an atom with respect to 1/12 th of the mass of carbon-12 atom. There are a number of situations where elemental composition is important – e.g., how much iron in an ore sample, how much lead in your drinking The gram - atomic mass of sodium is . Sodium is the fourth most abundant element on earth, comprising about 2.6% of the earth's crust; it is the most abundant of the alkali group of metals. LEARNING APP; ANSWR; CODR; XPLOR; SCHOOL OS; answr. ››More information on molar mass and molecular weight. 2. Let’s assume that it is the atom of sodium (Na). This value on a periodic table is given in atomic mass units or amu , but for chemistry calculations, you usually write atomic mass in terms of grams per mole or g/mol. Which of the following statements is correc O An atom of sodium has 11… Atomic Number of Sodium is 11.. Chemical symbol for Sodium is Na. A. Then the molecular mass of NaOH is :22.99+16+1=39.99u Join Now. Relative atomic mass: 22.90 Number of protons in Sodium is 11. Text Solution. Therefore, 100 grams of sodium contains more number of … Statement-1 : Atomic mass of sodium is 23u