Bonding Flashcards
What is special about noble gases
They have a full shell of electrons giving the atom stable unreactive property
Ion
Ion is a charged particle formed when an atom gains or loses electrons
Molecular ion
Is a charged particle containing two or more atoms covalently bonded
What is Ionic bond
the attraction between oppositely charged ions
Ionic bonding occurs between
Metals and non-metals
Why is ionic bonding so strong
The opposite charges of the two ions attract each other strongly and requires a lot of energy to break them apart. This attraction is called ionic bonding
What is the name of the attraction behind ionic bonding
Electrostatic attraction
How do you draw cross and dot diagrams
Show the transfer of the electrons through an arrow and keep it the kids or dot it was. They’d square bracket with its charge
What does the curly arrow on a cross and dot diagram represent
The curly arrow represents electrons being TRANSFERRED from one atom to another
What does covalent bond occur between
Two non metals
What do non metals do in order to fill their outer shell
They share electrons
What is covalent bond
Is a shared pair of electrons
Molecule
Contains two or more atoms covalently bonded
Diatomic
That there are two atoms covalently bonded in the molecule
What does covalent bonding always result in
A shared pair of electrons
What qualities does covalent bonds give atoms
Strong and require a lot of energy to break
Lone pairs
Pairs of non bonding electrons in the outer shell
What are the electrons in the cross over section of a covalent bond labelled as
Sheared pair of bonding electrons
Nitrogen has a
Triple bond and is very strong
Covalent bonds that occur between two different non metals are called
Covalent bonds in compounds
How do you draw a covalent bond
Have the electrons being shared crossed over like a vein diagram using cross and dots to tell the difference
How do you draw structural formula for covalent bonds
Dash =bond
two dots = lone pair
Metallic bonding
Is the attraction between delocalised electrons and the positive ions in a regular lattice
How are metal atoms formed structurally and what does this cause
They are packed tightly in a regular lattice.
The tight packing causes outer electrons to get separated from their atoms
the result is a lattice of positive ions in a delocalised sea of electrons
What do you need to remember when drawing a diagram of metallic bonding?
1.draw at least 4x3 atoms that don’t touch
2.draw random e- about the place
3.Label the cations arranged in the lattice
4.label the delocalised electrons
