Answer:
Step-by-step explanation:
The question requires us to draw the Lewis structure for ClO3-.
In order to draw the Lewis structure of a molecule or ion, we need to consider the number of valence electrons in each atom of the structure:
O presents electron configuration: 1s2 2s2 2p4, thus it contains 6 valence electrons.
Cl presents electron configuration: 1s2 2s2 2p6 3s2 3p5, thus it contains 7 valence electrons.
Now, we can start drawing the Lewis structure for ClO3-.
1) First, we need to choose a central atom. Let's consider Cl as there is only one atom of it:
2) Next, we can "add" the electrons between the outer atoms and the central atom, representing bonds:
3) Now, let's complete the electrons on the atoms, starting with the outer atoms and then filling the central atom. Note that the total electrons is 3*6 + 1*7 = 25 electrons.