Question

The atomic mass of Oxygen is 16 u.

Considering the above statement, which among the following options can be inferred?

• A. The mass is with respect to Carbon -12 atom.
• B. The atomic mass of Oxygen is 16 of the mass of carbon 12 atom.
• C. The atomic mass of hydrogen is 16 times the mass of Hydrogen.
• D. The mass is with respect to Carbon -12 atom and the atomic mass of Oxygen is 16 of the mass of carbon 12 atom.

Answer 1

Answer: (D)

The explanation for the correct option

Option(B) The mass is with respect to the Carbon -12 atom and the atomic mass of Oxygen is 16 of the mass of carbon 12 atom.

• The relative atomic masses of all elements are found with respect to carbon-12 atom.
• The relative atomic mass of an element is defined as the weight in grams of the number of atoms of the element contained in 12.00 g of carbon-12

• One atomic mass unit is ${\frac{1}{12}}^{th}$ of the mass of one atom of carbon-12.

• The atomic mass of oxygen is 16 u represents that the atomic mass of oxygen is $16$$\times$$\frac{1}{12}$ of the mass of carbon - 12 atom.

Hence, Option(B) The mass is with respect to the Carbon -12 atom and the atomic mass of Oxygen is $16\times {\frac{1}{12}}^{th}$ of the mass of carbon 12 atom. is the correct option.