ଛାଞ୍ଚ:Infobox Indium

Indium,  ₄₉In

ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ	indium, In
Appearance	silvery lustrous gray
ଉଚ୍ଚାରଣ	/ˈɪndiəm/ IN-dee-əm
Indium in the periodic table
Ga ↑ In ↓ Tl cadmium ← indium → tin
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)	49
ଶ୍ରେଣୀ, ବ୍ଳକ	group 13, p-block
ପର୍ଯ୍ୟାୟ	period 5
ମୌଳିକ ପ୍ରକାର	post-transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)	114.818
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ	[Kr] 4d10 5s2 5p1
per shell	2, 8, 18, 18, 3
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା	solid
ଗଳନାଙ୍କ	429.7485 K ​(156.5985 °C, ​313.8773 °F)
ସ୍ଫୁଟନାଙ୍କ	2345 K ​(2072 °C, ​3762 °F)
Density near r.t.	7.31 g/cm3
when liquid, at m.p.	7.02 g/cm3
Heat of fusion	3.281 kJ/mol
Heat of	231.8 kJ/mol
Molar heat capacity	26.74 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1196 1325 1485 1690 1962 2340
Atomic properties
Oxidation states	3, 2, 1 (amphoteric oxide)
Electronegativity	Pauling scale: 1.78
Atomic radius	empirical: 167 pm
Covalent radius	142±5 pm
Van der Waals radius	193 pm
Miscellanea
Crystal structure	​tetragonal
Speed of sound thin rod	1215 m/s (at 20 °C)
Thermal expansion	32.1 µm/(m·K) (at 25 °C)
Thermal conductivity	81.8 W/(m·K)
Electrical resistivity	83.7 n Ω·m (at 20 °C)
Magnetic ordering	diamagnetic
Young's modulus	11 GPa
Mohs hardness	1.2
Brinell hardness	8.83 MPa
CAS Number	7440-74-6
ଇତିହାସ
ଆବିଷ୍କାର	Ferdinand Reich and Hieronymous Theodor Richter (1863)
First isolation	Hieronymous Theodor Richter (1867)
Most stable isotopes of indium
iso NA half-life DM DE (MeV) DP 113In 4.3% 113In is stable with 64 neutrons 115In 95.7% 4.41×1014 y β− 0.495 115Sn

References

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