Structures And Bonding Flashcards
What does ionic bonding involve?
It involves the metal losing electrons to gain a + charge and the non metal gaining electrons to receive a - charge. As the particles have opposite charges they are strongly bonded together.
What is the structure of an ionic compound?
It forms large ionic lattices, ions in closest packed, regular lattice arrangement.
Strong electrostatic forces act on oppositely charged ions that are arranged alternately.
Why do salt crystals tend to be cuboid in shape?
Because the sodium and chloride ions are held in a regular lattice arrangement.
What qualities do ionic compounds possess?
High melting and boiling points due to high electrostatic forces of attraction
> when melted can carry electric current as ions are free to move
Water soluble and in water can carry an electric current as again ions are free to move.
What is the chemical formula for ammonia?
> methane
NH3
CH4
What is special about O2?
The atoms share two electrons, forming a double bond
Why do both covalent bonding and ionic bonding work?
Because the atoms “want” to have a full outer shell of electrons.
What is an isotope?
An a different version of the element that has the same number of protons and electrons but a different number of neutrons
