Na̍p

Na̍p,  ₁₁Na

ngoi-kôn
silvery white metallic Spectral lines of sodium
Kî-pún sin-sit
Miàng, fù-ho	Na̍p, Na
Yîn-ngî	sodium
ngoi-hìn	silvery white metallic
Na̍p chhai chû-khì-péu ke vi-chi
Li ↑ Na ↓ K Nái ← Na̍p → magnesium
ngièn-chṳ́ sì-sú	11
ngièn-chṳ́-liòng (±)	22.98976928(2)
ngièn-su lui-phe̍t	kán-kîm-su̍k
Chhu̍k, fûn-khî	1 chhu̍k, s-block
chû-khì	period 3
thien-chṳ́ phài-lie̍t	[Ne] 3s1
per shell	2, 8, 1
vu̍t-lî sin-chṳt
Siông	ku-thí
yùng-tiám	370.944 K ​(97.794 °C, ​208.029 °F)
pui-tiám	1156.090 K ​(882.940 °C, ​1621.292 °F)
Me̍t-thu near Sit-vûn	0.968 g·cm−3
0.927 g·cm−3
lìm-kie-tiám	2573 K, 35 MPa (extrapolated)
Yùng-fa-ngie̍t	2.60 kJ·mol−1
Chîn-fat-ngie̍t	97.42 kJ·mol−1
Ngie̍t-yùng-liong	28.230 J·mol−1·K−1
chîn-hi-ap P (Pa) 1 10 100 1 k 10 k 100 k chhai T (K) 554 617 697 802 946 1153
Ngièn-chṳ́ sin-chṳt
Yông-fa-su	+1, −1 ​(a strongly basic oxide)
Thien-fu-sin	Pauling scale: 0.93
Thien-lì-nèn	1st: 495.8 kJ·mol−1 2nd: 4562 kJ·mol−1 3rd: 6910.3 kJ·mol−1 (more)
Ngièn-chṳ́ pan-kang	empirical: 186 pm
Khiung-ka pan-kang	166±9 pm
Van der Waals pan-kang	227 pm
Miscellanea
Chîn-thí keu-chho	​body-centered cubic (bcc)
Sâng-suk thin rod	3200 m·s−1 (at 20 °C)
Ngie̍t-phàng-chong	71 µm·m−1·K−1 (at 25 °C)
Ngie̍t-chhòn-thô-li̍t	142 W·m−1·K−1
Thien-chú-li̍t	47.7 nΩ·m (at 20 °C)
Chhṳ̀-sin	paramagnetic
Young's modulus	10 GPa
Shear modulus	3.3 GPa
Bulk modulus	6.3 GPa
Mohs hardness	0.5
Brinell hardness	0.69 MPa
CAS Registry Number	7440-23-5
Le̍k-sú
Hoat-kiàn kap siōng chá ê tông-ūi-sò͘	Humphry Davy (1807)
Chui vún-thin ke thùng-vi-su
Chú vùn-chông: Na̍p ke thùng-vi-su
iso NA half-life DM DE (MeV) DP 23Na 100% 23Na is stable with 12 neutrons
* = excited state

Na̍p (鈉) he yit-tsúng Fa-ho̍k Ngièn-su, fa-ho̍k fù-ho vì Na, ngièn-tsṳ́ su-muk he 11, tshai Ngièn-su Tsû-khì péu chûng thi sṳ̍p-yit vi.