All Flashcards
What is the effect of a central atom having too few valence electrons after single bonds and lone pairs are added?
The central atom may have an incomplete octet, especially common with Beryllium and Boron.
What is the effect of a central atom having too many valence electrons after single bonds are formed?
Form double or triple bonds by erasing lone pairs on surrounding atoms.
What is the effect of a molecule having an odd number of valence electrons?
It is impossible to pair all electrons, resulting in a molecule with unpaired electrons.
What are the steps to draw an ionic Lewis Dot Structure?
- Write the empirical formula. 2. Draw each atom with valence electrons. 3. Transfer electrons from metal to nonmetal to achieve full octets. 4. Use brackets around each ion with charges outside.
What are the steps to draw a covalent Lewis Dot Structure?
- Count total valence electrons. 2. Draw the central atom. 3. Connect atoms with single bonds. 4. Add lone pairs to outer atoms to complete octets. 5. Count electrons used. 6. Form double/triple bonds if too many electrons. 7. Add to central atom if too few.
In the Lewis structure of , what type of bond connects the two oxygen atoms?
A double bond
In the Lewis structure of , what type of bond connects the two nitrogen atoms?
A triple bond
In the Lewis structure of , what type of bond connects the magnesium and chlorine atoms?
Ionic bond