Unit 4.3 - Bonding Flashcards
(13 cards)
Noble Gases
(Group 18) Extremely stable atoms which rarely bond with other atoms. They are monatomic, existing as single atoms. (lack of reactivity)
Metallic Bonding
A mutual attraction between a lattice of positive metal ions and a sea of delocalised, outer shell electrons
Ionic Bonding
Attraction of positive and negative ions formed from the transfer of electrons from metallic to non-metallic atoms
Covalent Bonding
The sharing of electrons between atoms of non-metals
Ions
Charged atoms, or groups of atoms formed by electrons being transferred from one atom to another
Molecules
discrete groupings of atoms covalently bonded together
Lattices
a regular arrangement of particles. In ionic lattices, particles are ions; in solid molecular lattices, the particles are molecules; and in diamond and graphite, the particles are atoms
Properties of Metals
Malleable, ductile, conductors of heat and electricity
Metal atoms _______ electrons to form _______ ions which have ________ protons than electrons
Metal atoms lost electrons to form positive ions which have more protons than electrons
Non-Metal atoms _______ electrons to form _______ ions which have ________ protons than electrons
Non-Metal atoms lost electrons to form negative ions which have less protons than electrons
Bonds
Links that join atoms together. Formed by transferring or sharing atoms.
How do ionic substances conduct electricity?
Only when molten or dissolved in water because when solid, ionic substances are bonded with lattice but in water the ions detach and are free to create electric current
How do you predict the number of covalent bonds?
The number of electrons needed to obtain electron configuration of a noble gas is the same number of bonds
