Which of the following statement is incorrect?
A. Sodium chloride do not contain discrete molecule as their constituent units.
B. The formula, such as NaCl is used to calculate the molecular mass instead of formula mass.
C. In the periodic table of elements, the atomic masses mentioned for different elements actually represent their average atomic masses.
D. Molecular mass is obtained by adding the atomic mass of each element by the number of its atoms and adding them together.
E. At present, ' 
' has been replaced by 'amu', which is known as unified mass.
Text Solution
Verified by ExpertsB
Among the given statements, only and are incorrect. Its correct from are :
• The formula, such as NaCl is used the calculate formula mass instead of molecular mass.
• Molecular mass is obtained by multiplying the atomic mass of each element by the number of its atoms and adding them together.
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