As Yougo Down Acolumn,The Atomic Radius Increases

PeriodicTrends

Thetablethataccompaniesthisworksheetcontainsavarietyofinformationaboutelementsinthemainpartoftheperiodictable.Usetheinformationinthattabletocreategraphstodiscoverthetrendsthatexistintheperiodictable. Ifthereisablankboxforanelement,itmeansthatvaluehasnotbeenaccuratelydeterminedorthevaluehasno meaningforthatelement.Donotincludeanyblanksinyourgraph.Foreachproblemcreateagraph,sketchthegraphonthispaperandtellthetrendthatexists.

AtomicRadius

1.Formembersofthenitrogenfamily,determinethetrendthatexistsbetweentheperiodandtheatomicradius.

Element / Period / AtomicRadius
N / 2 / 75
Phosphorus / 3 / 110
Arsenic / 4 / 125
Antimony / 5 / 145
Bismuth / 6 / 155

As yougo down acolumn,the atomic radius increases.

2.Forelementsinrowthree,determinethetrendthatexistsbetweenthefamilyandtheatomicradius.

Element / Family / AtomicRadius
Sodium / 1 / 186
Magnesium / 2 / 160
Aluminum / 3 / 143
Silicon / 4 / 118
Phosphorus / 5 / 110
Sulfur / 6 / 103
chlorine / 7 / 99

As yougo across a row, theatomic radius decreases.

1.Formembersoftheoxygenfamily,determinetherelationshipbetweentheelectronegativityandtheperiodinwhichtheelementisfound.

Element / Period / Electronegativity
Oxygen / 2 / 3.5
Sulfur / 3 / 2.6
Selenium / 4 / 2.5
Tellurium / 5 / 2.3
Polonium / 6 / 1.8

As yougo down acolumn,theelectronegativity decreases.

2.Formembersofthethirdrow,discovertherelationshipbetweentheelectronegativityandthefamilynumberoftheelement.

Element / Family / Electronegativity
Sodium / 1 / 0.9
Magnesium / 2 / 1.2
Aluminum / 3 / 1.5
Silicon / 4 / 1.9
Phosphorus / 5 / 2.2
Sulfur / 6 / 2.6
Chlorine / 7 / 3.2

Increases

1.Forthenoblegases,determinetherelationshipbetweentheionizationenergyandtheperiodoftheelement.

Element / Period / IonizationEnergy
Helium / 1 / 24.59
Neon / 2 / 21.57
Argon / 3 / 15.76
Krypton / 4 / 14
Xenon / 5 / 12.13
Radon / 6 / 10.75

As yougo down acolumn,theionizationenergydecreases .

2.Formembersofrowtwo,discovertherelationshipbetweentheionizationenergyandthefamilynumberoftheelement.

Element / Family / IonizationEnergy
Lithium / 1 / 5.39
Beryllium / 2 / 9.32
Boron / 3 / 8.3
Carbon / 4 / 11.26
Nitrogen / 5 / 14.53
Oxygen / 6 / 13.62
Fluorine / 7 / 17.42
Neon / 8 / 21.57

Increases

AtomicRadiusvs.IonicRadius

Forelementsinrowthree,determinethetrendthatexistsbetweenatomicradiusandionicradius.Drawalinefortheatomicradiusvsthefamilynumber.Thendrawasecondlinefortheionicradiusvsthefamilynumber.Discussthetrendbetweenthetwolines.

Element / Family / AtomicRadius / IonicRadius
Sodium / 1 / 186 / 95
Magnesium / 2 / 160 / 65
Aluminum / 3 / 143 / 50
Silicon / 4 / 118 / 41
Phosphorus / 5 / 110 / 212
Sulfur / 6 / 103 / 184
Chlorine / 7 / 99 / 181

Discussthetrendthatyouobserve:

For metals the atomic radius is larger than the ionic radius for nonmetals the atomic radius is smaller than the ionic radius.