LDS rules, etc. Flashcards
Electrostatic Force:
Force existing as a result of the
attraction or repulsion between two charged particles
Electrostatic relationships
1) Opposite charges attract each other
2) Like charges repel each other
The valence e‐:
the # of e‐ in the outer shell, the e‐ that
take part in chemical reactions
Do noble gases have valence electrons?
• The noble gases do not have any valence e‐ and are
NOT reactive
Describe ionic bonds
electron stealing occurs which makes (+)
and (‐) ions
• The bond is formed by the attraction of ions
• It will be the attraction of the positive ion to the
negative ion that keeps the compound together
What is an atoms goal (In reference to electrons in shells)
• The goal of any atom is to have a closed shell
• For most atoms that will mean it wants 8 e‐
(there are some exceptions to this rule)
• However many e‐ it takes to close the shell is
the number of e‐ that will be transferred
Covalent bond:
- A bond that occurs between 2 non‐metals (elements on the right side of the Periodic Table)
- e‐ sharing occurs between the 2 non‐metals
Describe the relationship between electronegativity and covalent bonds
• Covalent bonds occur because both of the
non‐metals have high electronegativities
• This means that each non‐metal will hang on
to their own e‐ very tightly
• Because the electronegativities of non‐metals
are very similar, there is no clear winner in any
fight for an e‐
• Therefore the e‐ will end up being shared
between the non‐metals
What is an energy deficient atom (explain):
‐ The atom does not have enough e‐ to satisfy
the octet rule
‐ H is the obvious example as it has only one e‐
and room for only one more
‐ Other exceptions: B ‐> Boron has a relatively
low electronegativity ‐> This means that the best
it can do is gain one e‐ for every e‐ that it can
contribute to the bond
‐ B: has 3 e‐ to contribute to the bond
‐ Therefore it can only share a maximum of 6 e‐ : 3
from itself and 3 from the bonding atom
Which element can have more than 8 electrons
Selenium
