Physical Props.
Physical Props. #2
Period Table
Chemical Props.
Chemical Props. #2
100
As a period is crossed from left to right, one ________ is added to the nucleus an one __________ is added to the outer shell
proton, electron
100
____________ is energy required to remove one mole of electrons from one mole of gaseous atoms
First ionization energy
100
Elements are organized according to increasing _______________
atomic number
100
Elements in groups 1-3 _________ electrons to adopt arrangement of nearest noble gases wih lower atomic number
lose
100
Elements in 5-7 _________ electrons to adopt arrangement of nearest noble gases wih lower atomic number
gain
200
Melting points decreases down group 1 and ___________ down group 7
increases
200
Electronegativity ___________ across periods
increases
200
Groups are ______________ and periods are ___________
verticle, horizontal
200
Chemical propeties are determined by ________
Electron arrangement
200
Group 0 (Noble Gases) elements are least active because ___________
Inablity to lose/gain electron
300
Which one of the following elements has the highest electronegativity : Be, Cl, Ca, Br?
Cl
300
Define the term electronegativity
The ability of atom to attract outermost electrons from another atom when forming chemical bond
300
_______________ indicate how many occupied energy levels/ shells
Periods
300
Alkalis are bases that are _____________
soluble in water
300
Elements of the same group have similar chemical properties because of ______________
Same number of electron in outer shell
400
Atomic radius _________ across a period
decreases
400
Define atomic radius
Half the distance between neighboring nuclei
400
_____________ indicate number of electrons in outermost level/ shell
Groups
400
Oxides of Na to Al in period 3 have ________ structure
ionic
400
Oxides of P to Cl in period 3 have ________ structure
covalent
500
Decrease in atomic radius is a result of ____________________________
greater number of proton, electron cloud decreases because more attraction
500
Increase in electronegativity is a result of _______________________________________
smaller size, more attraction between particles, harder to pull
500
Germanium has __________ electrons in is outermost level
4
500
Across the oxides in period 3, elements go from __________ to ____________ to _____________
basic, amphoteric, acidic
500
Basic oxide react with _________ to form salt and water
acid
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