The formula to calculate the Atomic Ratio (AR) is:
\[ \text{AR} = \frac{\text{AAM}}{\text{RS}} \]
Where:
Let's say the average atomic mass (AAM) is 50 g/mol and the reference standard (RS) is 10 g/mol. Using the formula:
\[ \text{AR} = \frac{50}{10} = 5 \]
So, the atomic ratio is 5.
Definition: The atomic ratio is the ratio of the number of atoms of one element to the number of atoms of another element in a compound.
Formula: \( \text{Atomic Ratio} = \frac{n_A}{n_B} \)
Example: \( \text{Atomic Ratio} = \frac{2}{3} \)
Definition: Atomic size is the distance from the nucleus of an atom to the outermost shell of electrons.
Formula: \( r = \frac{a_0 n^2}{Z} \)
Example: \( r = \frac{0.529 \times 2^2}{3} \)
Definition: The atomic number is the number of protons in the nucleus of an atom.
Formula: \( Z = \text{Number of Protons} \)
Example: \( Z = 6 \)
Definition: Atomic percentage is the percentage of a particular element in a compound, based on the number of atoms.
Formula: \( \text{Atomic Percentage} = \left( \frac{n_A}{n_{\text{total}}} \right) \times 100 \)
Example: \( \text{Atomic Percentage} = \left( \frac{2}{5} \right) \times 100 \)
Definition: Atomic percent is the fraction of the total number of atoms that are of a particular element, expressed as a percentage.
Formula: \( \text{Atomic Percent} = \left( \frac{n_A}{n_{\text{total}}} \right) \times 100 \)
Example: \( \text{Atomic Percent} = \left( \frac{3}{8} \right) \times 100 \)
