5.2 Flashcards
A covalent bond forms between what atoms?
Nonmetal
An ionic bond forms between what atoms?
Metal and nonmetal
How do atoms form a covalent bond?
Atoms fight over their electrons.
What does bonding provide?
Stability
Do metals tend to lose or gain electrons?
Lose
Do nonmetals tend to lose or gains electrons?
Gain
What is electronegativity?
The measure of how strongly atoms attract new bonding electrons to themselves.
What is a non polar covalent bond?
Bonding electrons shared equally between two atoms, equal electronegativity.
What is a polar covalent bond?
Bonding electrons shared unequally between two atoms, lower and higher electronegativity.
How does an ionic bond form between atoms?
Atoms with different EN transfer valence electrons to become positive and negative and attract.
What kind of sharing of electrons does ionic bonds have?
No sharing.
Whether atoms lose or gain electrons depends on what?
The attraction for valence electrons.
What kind of valence shell makes an atom more stable?
A full valence shell.
What do covalent bonds form?
Atoms
What do ionic bonds form?
Ionic crystals
What type of covalent bonds are the strongest?
Triple bonds
What makes triple bonds?
Three pairs of electrons being shared.
What does the formula of covalent bonds describe?
The number of atoms of each element in a molecule.
What does the formula of ionic bonds describe?
The reduced ratio.
In ionic bonds, which atoms take electrons from what?
Nonmetals take electrons from metal.
Two atoms have equal electronegativity, what bond will they have?
Non polar covalent bond.
Two atoms have slightly different electronegativity, what bond will they have?
Polar covalent bond.
Two atoms have really different electronegativity, what bond will they have?
Ionic bond.
What side of the periodic table are metals?
Left
What side of the periodic table are non metals?
Right
What kind of sharing of electrons do polar covalent bonds have?
Unequal sharing.
What kind of sharing of electrons. do non polar covalent bonds have?
Equal sharing.
