Periodic Table of The Elements Periods Groups

[Pages:3]Periods

Periodic Table of The Elements

1A

Groups

8A

1

18

1

1 H

1.01

2A 2

3

4

2

Li

6.94

Be

9.01

# of protons

Element

Atomic Weight

3A 4A 5A 6A 13 14 15 16

7A 17

2

He

4.00

5

6

7

8

9

10

B

C N

O

F

Ne

10.81 12.01 14.01 16.00 19.00 20.18

11

12

3 Na Mg

3B 4B

3

4

5B 5

6B 6

7B 7

8

8B 9

1B

2B

13

14

15

16

10

11

12 Al

Si

P

S

17

Cl

18

Ar

22.99 24.31

26.98 28.09 30.97 32.07 35.45 39.95

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

4 K

Ca Sc

Ti

V

Cr

Mn

Fe

Co

Ni

Cu Zn Ga Ge As Se

Br

Kr

39.10 40.08 44.96 47.87 50.94 52.00 54.94 55.85 58.93 58.69 63.55 65.39 69.72 72.64 74.92 78.96 79.90 83.80

37

38

39

40

41

42

5 Rb Sr

Y

Zr

Nb Mo

85.47 87.62 88.91 91.22 92.91 95.94

43

44

45

46

47

48

49

50

51

52

53

54

Tc Ru Rh Pd Ag Cd In Sn Sb Te

I

Xe

[98]

101.07 102.91 106.42 107.87 112.41 114.82 118.71 121.76 127.60 126.90 131.29

55

56

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

6 Cs Ba

*

Hf

Ta

W

Re

Os

Ir

Pt

Au Hg Tl Pb Bi Po

At

Rn

132.91 137.33

178.49 180.95 183.84 186.21 190.23 192.22 195.08 196.97 200.59 204.38 207.2 208.98 209

210

222

87

88

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

7 Fr

Ra

~

Rf

Db

Sg

Bh

Hs

Mt

Ds

Rg Cn Nh Fl Mc Lv

Ts Og

223

226

267

268

271

272

270

276

281

280

285

284

289

288

293

294

294

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

Lanthanide Series * La

Ce

Pr

Nd Pm Sm Eu

Gd

Tb

Dy

Ho

Er

Tm Yb Lu

138.91 140.12 140.91 144.24 [145] 150.36 151.97 157.25 158.93 162.50 164.93 167.26 168.93 173.04 174.97

Actinide Series ~

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

Ac Th

Pa

U

Np

Pu

Am Cm

Bk

Cf

Es

Fm

Md No Lr

[227] 232.04 231.04 238.03 [237]

[244]

[243]

[247]

[247]

[251]

[252]

[257]

[258] [259] 262

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Periodic Table of Elements Updated Summer 2019

Periodic Table Key

Group labels 1, 2, 3, etc. are recommended by the International Union of Pure and Applied Chemistry (IUPAC); the labels 1A, 2A, 3B, etc. are more common American usage.

Atomic masses in brackets are the most stable isotope of radioactive elements. Elements with black font are those that are solid at STP (standard temperature, 0? C, and standard pressure, 1 atm), red

elements are those that are liquid at STP, green elements are those that are gaseous at STP, and blue elements are those that are synthetically prepared. Background colors designate the following: Alkali metals, alkaline earth metals, transition metals, post-transition metal, metallloids, other metals, halogens, noble gases, lanthanoids, actinoids and other nonmetals.

Actinium

Ac Copper

Cu Iron

Fe

Osmium

Aluminum

Al

Curium

Cm Krypton

Kr

Oxygen

Americium Am Darmstadtium Ds Lanthanum

La

Palladium

Antimony

Sb

Dubnium

Db Lawrencium

Lr

Phosphorus

Argon

Ar

Dysporosium

Dy Lead

Pb Platinum

Arsenic

As Einsteinium

Es

Lithium

Li

Plutonium

Astatine

At

Erbium

Er

Livermorium

Lv

Polonium

Barium

Ba Europium

Eu

Lutetium

Lu

Potassium

Berkelium

Bk

Fermium

Fm Magnesium

Mg Praseodymium

Beryllium

Be Flerovium

Fl

Manganese

Mn Promethium

Bismuth

Bi

Fluorine

F

Meitnerium

Mt Protactinium

Bohrium

Bh Francium

Fr

Mendelevium Md Radium

Boron

B

Gadolinium

Gd Mercury

Hg Radon

Bromine

Br

Gallium

Ga Molybdenum Mo Rhenium

Cadmium

Cd Germanium

Ge Moscovium

Mc Rhodium

Calcium

Ca Gold

Au Neodymium

Nd Roentenium

Californium Cf

Hafnium

Hf

Neon

Ne Rubidium

Carbon

C

Hassium

Hs

Neptunium

Np Ruthenium

Cerium

Ce Helium

He Nickel

Ni

Rutherfordium

Cesium

Cs

Holmium

Ho Nihonium

Nh Samarium

Chlorine

Cl

Hydrogen

H

Niobium

Nb Scandium

Chromium Cr

Indium

In

Nitrogen

N

Seaborgium

Cobalt

Co Iodine

I

Nobelium

No Selenium

Copernicium Cn Iridium

Ir

Oganesson

Og Silicon

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Os Silver

Na

O Sodium

Sr

Pd Strontium

S

P Sulfur

Ta

Pt Tantalum

Tc

Pu Technetium Te

Po Tellurium

Tb

K Tennessine Ts

Pr Terbium

Tl

Pm Thallium

Th

Pa Thorium

Tm

Ra Thulium

Sn

Rn Tin

Ti

Re Titanium

W

Rh Tungsten

U

Rb Uranium

V

Rg Vanadium

Xe

Ru Xenon

Yb

Rf Ytterbium

Y

Sm Yttrium

Zn

Sc Zinc

Zr

Sg Zirconium

Se

Si

Ag Periodic Table of Elements

Updated Summer 2019

Electronegativity

Periodic Table Trends

Metallic Character

Atomic Radius

Increasing

Increasing

Increasing

Increasing

Electronegativity is measured on a unitless scale that ranges from 0.7 to 4.0 that represents the likelihood of an atom attracting an electron. Noble gases are assigned a value of 0 as they do not attract electrons.

Ionic Radius

Increasing Metallic character describes how much an element exhibits the physical and chemical properties of metals.

Ionization Energy

Increasing The atomic radius is a physical measurement of the distance from the center of an atom to the outer shell of electrons.

Lattice Energy

Increasing

Decreasing

Increasing

Increasing

Ionic radius follows the same trend as the atomic radius. However, in most cases, nonmetals form anions and metals form cations, and the difference in charge affects the radius. Therefore, nonmetals and metals must be considered independent of each other.

Increasing

Ionization energy is the amount of energy (kJ/mol) required to remove an electron from the valence shell of the atom. The value also increases when removing subsequent electrons within the atom. Exceptions: Groups 3A and 6A have lower ionization energies as compared to groups 2A and 5A.

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The Academic Center for Excellence

Lattice energy (kJ/mol) describes the energy that is released when ions combine to form a compound. Both an increase in an atom's charge, and a decrease in atomic radius will lead to an increase in lattice energy.

Periodic Table of Elements Updated Summer 2019

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