Chemical Bonding Flashcards
What group is the Nobel gases in?
Group 8
What are the 6 Nobel gases?
- He
- Ne
- Ar
- Kr
- Xe
- Rn
How many electrons do Nobel gases have in there outer electron?
8
Describe novel gases:
- Very stable and un-reactive or inert
- Monatomic
- Dont normally form bonds with other elements
- Do not need to gain, lose or share electrons
- Lewis Octet rule
What does monatomic mean?
They exist as individual atoms
What are valance shells?
- Outermost occupied shell of an atom
- Highest principle quantum number
- Most likely to participate in bonding
What will atoms without 8 electrons in the valence shells will form?
Chemical bonds with other atoms
What are chemical bonds made from?
Electrons
How do atoms make bonds?
Atoms must collide with each other to make bonds
What are the two types of electrons in an atom?
- Core electrons
- Valance electrons
Define ionic bonds:
Is the electrostatic attraction that forms between oppositely charged ions
What two main ways for atoms bond with other bonds?
- Ionic bonding
- Covalent bonding
Define covalent bond:
is a shared pair of electrons between atoms
What happens between atoms in ionic bonding?
- Atoms gain or loss electrons to fulfil the octet rule
- Atoms become ions
Atoms that lose electrons have more or less proton than electrons?
More
Atoms that gain electrons have more or less protons to electrons?
Less
Do atoms become positively or negatively charged when they lose electrons?
Positive
Do atoms become positively or negatively charged when they gain electrons?
Negative
What are atoms called when they lose electrons?
cations
What elements normally lose electrons?
S and d block elements
What aerators called when they gain electrons?
Anions
What elements normally gain electrons?
P block elements
What charge do ionic compounds have?
Neutral charge
If ionic compounds have a neutral charge what must the total of cations equal to the total of anions?
Cations and anions must be equal
