ପୋଟାସିଅମ

ଉଇକିପିଡ଼ିଆ ରୁ
Potassium
19K
Na

K

Rb
argonpotassiumcalcium
ଭୌତିକ ରୁପ
silvery gray


Potassium pearls under paraffin oil. The large pearl measures 0.5 cm. Below: spectral lines of potassium
ସାଧାରଣ ଧର୍ମ
ନାମ, ପ୍ରତୀକ,
ପରମାଣୁ କ୍ରମାଙ୍କ
potassium, K,
19
ଉଚ୍ଚାରଣ /pɵˈtæsiəm/ po-tas-ee-əm
ମୌଳିକ ପ୍ରକାର alkali metal
ଶ୍ରେଣୀ, ପର୍ଯ୍ୟାୟ, ବ୍ଲକ୍ 1 (alkali metals), 4, s
ମାନକ ପରମାଣବିକ ଓଜନ 39.0983(1)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Ar] 4s1
2, 8, 8, 1
Electron shells of potassium (2, 8, 8, 1)
ଇତିହାସ
ଆବିଷ୍କାର Humphry Davy (1807)
First isolation Humphry Davy (1807)
ଭୌତିକ ଧର୍ମ
ଅବସ୍ଥା solid
(ରୁମ୍ ଟେମ୍ପରେଚର୍‌ରେ ଘନତା) 0.862 g·cm−3
Liquid density at m.p. 0.828 g·cm−3
ଗଳନାଙ୍କ 336.53 K, 63.38 °C, 146.08 °F
ସ୍ଫୁଟନାଙ୍କ 1032 K, 759 °C, 1398 °F
Triple point 336.35 K (63°C),  kPa
Heat of fusion 2.33 kJ·mol−1
Heat of vaporization 76.9 kJ·mol−1
Molar heat capacity 29.6 J·mol−1·K−1
Atomic properties
Oxidation states 1
(strongly basic oxide)
Electronegativity 0.82 (Pauling scale)
Ionization energies
(more)
1st: 418.8 kJ·mol−1
2nd: 3052 kJ·mol−1
3rd: 4420 kJ·mol−1
Atomic radius 227 pm
Covalent radius 203±12 pm
Van der Waals radius 275 pm
Miscellanea
Crystal structure body-centered cubic
Magnetic ordering paramagnetic
Electrical resistivity (20 °C) 72 nΩ·m
Thermal conductivity 102.5 W·m−1·K−1
Thermal expansion (25 °C) 83.3 µm·m−1·K−1
Speed of sound (thin rod) (20 °C) 2000 m·s−1
Young's modulus 3.53 GPa
Shear modulus 1.3 GPa
Bulk modulus 3.1 GPa
Mohs hardness 0.4
Brinell hardness 0.363 MPa
CAS registry number 7440-09-7
Most stable isotopes
Main article: Isotopes of potassium
iso NA half-life DM DE (MeV) DP
39K 93.26% 39K is stable with 20 neutrons
40K 0.012% 1.248(3)×109 y β 1.311 40Ca
ε 1.505 40Ar
β+ 1.505 40Ar
41K 6.73% 41K is stable with 22 neutrons
· r

ପୋଟାସିଅମ (ଇଂରାଜୀ: Potassium) ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Kପରମାଣୁ କ୍ରମାଙ୍କ ୧୯ ଅଟେ ।

ଧର୍ମ[ସମ୍ପାଦନା]

ଭୌତିକ[ସମ୍ପାଦନା]

ରାସାୟନିକ[ସମ୍ପାଦନା]

ଯୌଗିକ[ସମ୍ପାଦନା]

ସମସ୍ଥାନିକ[ସମ୍ପାଦନା]

ଇତିହାସ[ସମ୍ପାଦନା]

ବ୍ୟବସାୟିକ ଉତ୍ପାଦନ[ସମ୍ପାଦନା]

ବ୍ୟବହାର[ସମ୍ପାଦନା]

ଟୀକା[ସମ୍ପାଦନା]

ଆଧାର[ସମ୍ପାଦନା]

  • Burkhardt, Elizabeth R. et al. (2006). "Potassium and Potassium Alloys". Ullmann's Encyclopedia of Industrial Chemistry A22. pp. 31–38. doi:10.1002/14356007.a22_031.pub2. ISBN 3-527-30673-0. 
  • Greenwood, Norman N; Earnshaw, Alan (1997). Chemistry of the Elements (2 ed.). Oxford: Butterworth-Heinemann. ISBN 0-08-037941-9. 
  • Holleman, Arnold F.; Wiberg, Egon; Wiberg, Nils (1985). "Potassium". Lehrbuch der Anorganischen Chemie (in German) (91–100 ed.). Walter de Gruyter. ISBN 3-11-007511-3. 
  • Schultz, H. et al. (2006). "Potassium compounds". Ullmann's Encyclopedia of Industrial Chemistry A22. pp. 39–103. doi:10.1002/14356007.a22_031.pub2. ISBN 3-527-30673-0. 

ବାହାର ଲିଙ୍କ[ସମ୍ପାଦନା]