Chemistry Chapter 7 (ionic bonding and valence electrons)

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CN for FCP

12

CN for HCP

12

noble gases have ________

2s and 6p e-

CN for NaCl

6

CN for BCC

8

metal cations

BCC, FCP, HCP

which type of packing is the least dense? which two are denser

BCC= least HCP and FCP =denser

other than white if cation is in the __ block

D

T or F? alloys arent as strong has pure metals

FALSE, they are stronger

mixture of 2 elements, one of which is a metal

alloys

8 valence electrons = ____________

already stable

what crystal is bigger: anion or cation?

anion

why can ionic compounds conduct electricity if they are dissolved or melted

bc the atoms can move more freely and conduct a current

why are ionic compounds not malleable

because if you move the ions around they repel each other

what does malleable and ductile mean

bendable and able to be formed into a wire

what does a roman numeral represent

charge of ion

valence electrons are the electrons responsible for the ____________ properties of atoms; and found in the ________ energy level

chemical, outer

how many ions of the pos charge are attached

coordination number

number of ions of opposite charge touching a given ion

coordination number (CN)

electrons in the energy levels below the valence electrons

core electrons

a way of showing and keeping track of valence electrons

electron dot diagram

nonmetal atoms _______ electrons and make ________

gain, anions (neg)

which noble gas doesn't have 8 e- in the outer level

helium, it has two

when one atom is smaller than the other (ex: stainless steel)

interstitial alloy

metals ______ electrons and they make ________

lose, cations (pos)

nonmetals have ______ valence electrons

many

only contains metal cations, the attractions of free-floating valence electrons for pos charged metal ions

metallic bond

are ionic compounds malleable or ductile

no

all atoms react and try to achieve a _________

noble gas configuration

white color if cation is in group ____ or ____

one or two

anions and cations are held together by ______________

opp charges

if a ion is in the D block use a _____ in their name

roman numeral

valence electrons are the electrons found in the _____ and _____ levels

s and p

study # of valence electrons on the periodic table!!!

see notes

how do you write Na+1

sodium ion

properties of ionic compounds

solids, very high melting point, arranged in crystals, conductors when dissolved in water or are melted, brittle

both atoms are roughly the same size

substitutional alloy

how do you write S 2-

sulfide (add ide)

what does the symbol of a dot diagram represent

the nucleus and the inner electrons (element)

in forming compounds, atoms tend to achieve a noble gas configuration; 8 in the outer level is stable

the octet rule

which two elements can have two diff charges? what are they?

tin and lead charges +4 or +12

true or false? core electrons don't react because they are too close to the nucleus

true

true or false? ionic compounds don't conduct electricity (endless it is dissolved or melted)

true

when writing a dot diagram FIRST _______ and THEN __________

write the symbol and then put one dot for each valence electron

charge of silver

+1

charge of zinc

+2


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