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Helium, 2
Spectral lines of helium
Ki-pún sèng-chit
Miâ, hû-hō
helium, He
Gōa-hêng
colorless gas, exhibiting a red-orange glow when placed in a high-voltage electric field
Helium tī chiu-kî-piáu lāi ê ūi-tì
Goân-chú-hoan 2
Goân-chú-liōng (±) 4.002602(2)[1]
Goân-sò͘ lūi-pia̍t hi-iú khì-thé
Cho̍k , hun-khu 18 cho̍k s khu
Chiu-kî tē 1 chiu-kî
Tiān-chú pâi-lia̍t 1s2
per shell 2
Bu̍t-lí sèng-chit
Siòng khì-thé
Iûⁿ-tiám 0.95 K (−272.20 °C, −457.96 °F) (at 2.5 MPa)
Hut-tiám 4.222 K (−268.928 °C, −452.070 °F)
Bi̍t-tō͘ at stp (0 °C and 101.325 kPa ) 0.1786 g·L−1
0.145 g·cm−3
0.125 g·cm−3
Sam-siòng-tiám 2.177 K, 5.043 kPa
Lîm-kài-tiám 5.1953 K, 0.22746 MPa
Iûⁿ-hoà-jia̍t 0.0138 kJ·mol−1
Cheng-hoat-jia̍t 0.0829 kJ·mol−1
Jia̍t-iông-liōng 20.78[2] −1 −1
cheng-khì-ap ITS-90 )
P (Pa)
1
10
100
1 k
10 k
100 k
tī T (K)
1.23
1.67
2.48
4.21
Goân-chú sèng-chit
Sng-hòa-sò͘ 0
Tiān-hū-tō͘ Pauling scale: no data
Tiān-lī-lêng 1st: 2372.3 kJ·mol−1 −1
Kiōng-kè pòaⁿ-kèng 28 pm
Van der Waals pòaⁿ-kèng 140 pm
Cha̍p-lio̍k
Chiⁿ-thé kò͘-chō hexagonal close-packed (hcp)
Siaⁿ-sok 972 m·s−1
Jia̍t-thoân-tō-lu̍t 0.1513 W·m−1 −1
Chû-sèng diamagnetic [3]
CAS teng-kì pian-hō 7440-59-7
Le̍k-sú
Hō-miâ
after Helios , Greek god of the Sun
Hoat-hiān Pierre Janssen , Norman Lockyer (1868)
Siōng chá hû-lî
William Ramsay , Per Teodor Cleve , Abraham Langlet (1895)
Chòe ún-tēng ê tông-ūi-sò͘
Chú bûn-chiong: helium ê tông-ūi-sò͘
* Atmospheric value, abundance may differ elsewhere
He , helium , ia̍h hāi sī 1 chióng bô sek, phīⁿ--khí-lâi, tam--khí-lâi lóng bô bī ê hoà-ha̍k goân-sò͘ , sī chiu-kî-pió lāi-té bô siáⁿ oa̍h-tāng-la̍t ê 1 chióng hoâ-cho̍k khì-thé (noble gas), goân-chú-hoan 2. He ê kún-tiám ham iûⁿ-tiám sī choân-pō͘ goân-sò͘ lāi-té siāng kē--ê; nā m̄ sī kaù-te̍k ê chêng-hêng, He tiāⁿ-tio̍h sī khì-thé . Oá choa̍t-tùi lêng-tō͘ (absolute zero) ê sî, He ē pìⁿ-chiâⁿ 1 chióng chhiau-lâu-thé (superfluid), bô siáⁿ mô͘-chhat, sèng-chit chin te̍k-sû.
↑ Standard Atomic Weights 2013 . Commission on Isotopic Abundances and Atomic Weights ↑ Shuen-Chen Hwang, Robert D. Lein, Daniel A. Morgan (2005). "Noble Gases". Kirk Othmer Encyclopedia of Chemical Technology. Wiley. pp. 343–383. doi:10.1002/0471238961.0701190508230114.a01. ↑ Magnetic susceptibility of the elements and inorganic compounds , in Handbook of Chemistry and Physics 81st edition, CRC press.
