Actinium

Ac

89

227.028

1050

Neon

Ne

10

20.1179

-248.67

Aluminum

Al

13

26.9815

660.37

Neptunium

Np

93

237.048

640 + 1

Americium

Am

95

(243)

994 + 4

Nickel

Ni

28

58.69

1453

Antimony

Sb

51

121.75

630.74

Niobium

Nb

41

92.9064

2468 10

Argon

A

18

39.948

-189.2

Nitrogen

N

7

14.0067

-209.86

Arsenic

As

33

74.9216

817 ^[a]

Nobelium

No

102

(259)

Astatine

At

85

(210)

302

Osmium

Os

76

190.2

3045 30

Barium

Ba

56

137.33

725

Oxygen

O

8

15.9994

-218.4

Berkelium

Bk

97

(247)

Palladium

Pd

46

106.42

1554

Beryllium

Be

4

9.01218

1278 + 5

Phosphoms

P

15

30.9738

44.1

Bismuth

Bi

83

208.980

271.3

Platinum

Pt

78

195.08

1772

Boron

B

5

10.81

2079

Plutonium

Pu

94

(244)

641

Bromine

Br

35

79.904

-7.2

Polonium

Po

84

(209)

254

Cadmium

Cd

48

112.41

320.9

Potassium

K

19

39.0938

63.25

Calcium

Ca

20

40.08

839 + 2

Praseodymium

Pr

59

140.908

931 4

Californium

Cf

98

(251)

Promethium

Pm

61

(145)

1080 ^[b]

Carbon

C

6

12.011

3652 ^[c]

Protactinium

Pa

91

231.0359

1600

Cerium

Ce

58

140.12

798 2

Radium

Ra

88

226.025

700

Cesium

Cs

55

132.9054

28.4 + 0.01

Radon

Rn

86

(222)

-71

Chlorine

Cl