Science quiz #2

• Covalency numbers refers to the amount bonds required for an atom to form a compound
• Oxidation number refers to the charge of an atom whether it gains or looses an electron and become an ion
• Elements which looses electrons are still required to have enough energy to execute it. This is called Ionization energy
• Elements which are capable of accepting other electrons require amounts of energy to do it. This is called electron affinity
• Single bond, occurs when an electron is between two atoms which are active. Represented by one dash, and is weaker, lightly compact, and is most stable.
• Double bond is represented by two dahes, is much stronger and less stable.
• Triple bond which is represented by 3 dashes, it is the least stable bond.
• Atoms are combined to gain stability
• Ionic bond an electrostatic attraction where an atom transfers its electron to another atom.
• Lewis symbol is done with its symbol written down and the dots representing its valence electrons.
• Covalent bond involves the process of sharing electrons
• Diatomic molecules always form a non polar covalent bond, where the electrons are equally shared.
• Covalent bonds may be polar or non polar
• Non polar a type of chemical bonding where electrons are equally shared between two atons
• Octet rule. The word octect is derived from octagon.
• Octect rule. Tells you that atoms will strive to attain a electrpn to gain stability as that of noble gasses
• Isoelectronic having the same amount of electrons
• All nobles gasses have 8 valence electron except for! Helium. Which only has 2 valence electron.
• He has 2 electrons which also means DUET
• Noble gasses have 8 valence electrons which also means they are OCTET
• If electronegativity difference is greater than 1.9. it's ionic bond
• 0.4 or less. Non polar covalent bond
• Less than 1.9. polar covalent bond
• Chemical bonding. The process of linking and joining together of atoms to gain stability and to form a compound or molecule.
• Anion. An atom that gains an electron and carries a negative charge that corresponds to the number of electrons it gained
• Chemical bond. Is a force of attraction that holds atoms together in a compound or molecule
• Cation. An atom that looses an electron and carries a positive charge that corresponds to the number of electrons it loss
• LEDS- Lewis Electron Dot Structure. A convention illustrating an atom symbol surrounded by dots which represent the outermost valence electrons