1. What are the children doing with the ball? 2. How are children playing with the kite? 3. Where are the children playing? Children are playing various games in the garden. NCERT 2024-25 Class 3 English (Santoor) Chapter 4 Out in ...
Discussion Forum Latest Questions
The term “formula unit” is used for substances with ionic constituents because in ionic compounds, the smallest repeating unit is not a molecule but rather a formula unit consisting of ions in a fixed ratio.
The formula unit for an ionic compound is determined by balancing the charges of the constituent ions to create a neutral compound. For example, sodium chloride has a formula unit NaCl.
Molecular mass applies to covalent compounds, representing the sum of atomic masses in a molecule, while formula unit mass applies to ionic compounds, representing the sum of atomic masses in a formula unit.
Formula unit mass is calculated by adding the atomic masses of all the atoms present in a formula unit of a compound, similar to calculating molecular mass.