Chemical Bonds

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octet rule

-bonded atoms will have maximum number of valence electrons -same number as noble gases

Ionic Bonding Diagram

Emperical Formula = NaCL

polar covalent bond

bond between 2 atoms with different electronegativity

nonpolar covalent bond

bond between 2 atoms with similar electronegativity

metal atom in metallic bonding becomes BLANK

cation(+)

ionic bonding forms BLANK

crystals

properties of ionic compounds

crystals at room temp, high melting point, conducts electricity when melted or dissolved in water

same elements in covalent bonding can form BLANK

different molecular formulas

total number of electrons lost by metal atoms must BLANK

equal total number of electrons gained by nonmetal atoms

metal atoms in metallic bonding BLANK in electrons

float

nonmetals BLANK electrons

gain

nonmetal atom in ionic bonding BLANKS

gains valence electrons and becomes negative

number of valence electrons of a representative element

its group number

metals BLANK electrons

lose

metal atom in ionic bonding BLANKS

loses valence electrons and becomes positive

metallic bonding is BLANK of valence electrons

loss

Metallic Bonding

metal + metal

Ionic Bonding

metal atom + non-metal atom (large electronegativity difference)

metallic bonding special note

metal element or metal mixture/alloy

metallic bonding forms BLANK

metal network

metals are malleable because BLANK

metals have mobile valence electrons

covalent bonding forms BLANK

molecules

shared electrons in covalent bonding are BLANK

negative between positive nucleus of both atoms

electrical charge of an ionic compound

neutral

Covalent Bonding

non-metal + non-metal (similar electronegativity)

atoms in covalent bonding follow BLANK

octet rule

atoms in ionic bonding follow BLANK

octet rule

atoms in metallic bonding follow BLANK

octet rule

atoms in covalent bonding BLANK

overlap so some valence electrons are in both atoms

chemical bonds

positive or negative attractions between different atoms

atoms in metals are a BLANK

sea of electrons

covalent bonding is BLANK of valence electrons

sharing

ionic bonding is BLANK of valence electrons

transfer

what causes chemical bonds

valence electrons of the atoms


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