MODULE 2 - 2.2.2 bonding and structure Flashcards
What is ionic bonding?
The electrostatic force ofattraction between positive and negative ions
Why do most ionic compounds dissolve in water?
Water is polar and attracts the + and - ions, breaking the structure
Why can ionic compounds conduct electricity?
They conduct electricity when molten as the ions are free to move around
Why can ionic compounds conduct electricity?
They have high melting points and strong electrostatic forces of attraction between oppositely charged ions, which require lots of energy to overcome
What is covalent bonding?
The strong electrostatic force of attraction between a shared pair of electrons and the nuclei of the bonded atoms
What is a dative covalent bond?
When one atom donates 2 of its electrons to form a bond
Why do molecules have specific shapes?
Because the bonds repel each other and want to stay far apart from each other
2 bond pairs, 0 lone pairs
Linear, 180
3 bond pairs, 0 lone pairs
Trigonal planar, 120
4 bond pairs, 0 lone pairs
Tetrahedral, 109.5
