Melting point

The melting point is the temperature at which the vapour pressure of the solid and the liquid are the same and the presssure totals one atmosphere.

Image showing periodicity of the chemical elements for melting point in a periodic table heatscape style.

Image showing periodicity of the chemical elements for melting point in a spiral periodic table heatscape style.

Image showing periodicity of the chemical elements for melting point in a 3D spiral periodic table column style.

Image showing periodicity of the chemical elements for melting point in a 3D periodic table column style.

Units

K (Kelvin)

Notes

Other temperature scales include the centigrade (Celsius) scale and the Fahrenheit scale. The size of one degree is the same on the Kelvin scale (K) as on the centigrade scale (°C). The zero point is different:

temperature (K) = temperature (°C) + 273.15

Thus, the melting point of water is = 0°C = 273.15 K and the boiling point of water is = 100°C = 373.15 K

On the Fahrenheit scale (°F), the melting point of water = 32°F while the boiling point = 212°F.

Therefore the degree size is different on the Fahrenheit scale with 180 Fahrenheit degrees = 100 centigrade degrees. Conversion between centigrade and Fahrenheit is achieved using the following relationship:

temperature (°C) = [temperature (°F) -32] * 5/9

You can look at visual representations of melting points, boiling points, and the liquid range using the following links.

Literature sources

A.M. James and M.P. Lord in Macmillan's Chemical and Physical Data, Macmillan, London, UK, 1992.
G.W.C. Kaye and T.H. Laby in Tables of physical and chemical constants, Longman, London, UK, 15th edition, 1993.

Explore the element of your choice through this periodic table.
1	2		3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18
1 H			2 He
3 Li	4 Be		5 B	6 C	7 N	8 O	9 F	10 Ne
11 Na	12 Mg		13 Al	14 Si	15 P	16 S	17 Cl	18 Ar
19 K	20 Ca		21 Sc	22 Ti	23 V	24 Cr	25 Mn	26 Fe	27 Co	28 Ni	29 Cu	30 Zn	31 Ga	32 Ge	33 As	34 Se	35 Br	36 Kr
37 Rb	38 Sr		39 Y	40 Zr	41 Nb	42 Mo	43 Tc	44 Ru	45 Rh	46 Pd	47 Ag	48 Cd	49 In	50 Sn	51 Sb	52 Te	53 I	54 Xe
55 Cs	56 Ba	*	71 Lu	72 Hf	73 Ta	74 W	75 Re	76 Os	77 Ir	78 Pt	79 Au	80 Hg	81 Tl	82 Pb	83 Bi	84 Po	85 At	86 Rn
87 Fr	88 Ra	**	103 Lr	104 Rf	105 Db	106 Sg	107 Bh	108 Hs	109 Mt	110 Ds	111 Rg	112 Cn	113 Nh	114 Fl	115 Mc	116 Lv	117 Ts	118 Og

*Lanthanoids	*	57 La	58 Ce	59 Pr	60 Nd	61 Pm	62 Sm	63 Eu	64 Gd	65 Tb	66 Dy	67 Ho	68 Er	69 Tm	70 Yb
**Actinoids	**	89 Ac	90 Th	91 Pa	92 U	93 Np	94 Pu	95 Am	96 Cm	97 Bk	98 Cf	99 Es	100 Fm	101 Md	102 No

Explore the element of your choice through this periodic table.

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

*Lanthanoids

**Actinoids

100

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102