• Explore SchoolMyKids in English

Periodic Table Element Comparison: Compare Elements - Scandium vs Potassium

Compare Scandium and Potassium

Compare Scandium and Potassium on the basis of their properties, attributes and periodic table facts. Compare elements on more than 90 properties. All the elements of similar categories show a lot of similarities and differences in their chemical, atomic, physical properties and uses. These similarities and dissimilarities should be known while we study periodic table elements. You can study the detailed comparison between Scandium vs Potassium with most reliable information about their properties, attributes, facts, uses etc. You can compare Sc vs K on more than 90 properties like electronegativity , oxidation state, atomic shells, orbital structure, Electronaffinity, physical states, electrical conductivity and many more.

123456789101112131415161718
1
1
H
Hydrogen
1.008

Atomic #

Electronic Shell #

Symbol
Name
Atomic Weight
HGas
HgLiquid
CSolid
Metals
Metalloids
NonMetals
Alkali metals
Alkali earth metals
Lanthanoids
Transition metals
Post-transition metals
Other nonmetals
Halogens
Nobel gas
Actinoids
2
He
Helium
4.003
2
3
Li
Lithium
6.941
4
Be
Beryllium
9.012
5
B
Boron
10.811
6
C
Carbon
12.011
7
N
Nitrogen
14.007
8
O
Oxygen
15.999
9
F
Fluorine
18.998
10
Ne
Neon
20.180
3
11
Na
Sodium
22.990
12
Mg
Magnesium
24.305
13
Al
Aluminium
26.982
14
Si
Silicon
28.085
15
P
Phosphorus
30.974
16
S
Sulfur
32.065
17
Cl
Chlorine
35.453
18
Ar
Argon
39.948
4
19
K
Potassium
39.098
20
Ca
Calcium
40.078
21
Sc
Scandium
44.956
22
Ti
Titanium
47.867
23
V
Vanadium
50.941
24
Cr
Chromium
51.996
25
Mn
Manganese
54.938
26
Fe
Iron
55.845
27
Co
Cobalt
58.933
28
Ni
Nickel
58.693
29
Cu
Copper
63.546
30
Zn
Zinc
65.409
31
Ga
Gallium
69.723
32
Ge
Germanium
72.640
33
As
Arsenic
74.922
34
Se
Selenium
78.960
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
5
37
Rb
Rubidium
85.468
38
Sr
Strontium
87.620
39
Y
Yttrium
88.906
40
Zr
Zirconium
91.224
41
Nb
Niobium
92.906
42
Mo
Molybdenum
95.940
43
Tc
Technetium
98
44
Ru
Ruthenium
101.070
45
Rh
Rhodium
102.906
46
Pd
Palladium
106.420
47
Ag
Silver
107.868
48
Cd
Cadmium
112.411
49
In
Indium
114.818
50
Sn
Tin
118.710
51
Sb
Antimony
121.760
52
Te
Tellurium
127.600
53
I
Iodine
126.904
54
Xe
Xenon
131.293
6
55
Cs
Cesium
132.905
56
Ba
Barium
137.327
57 - 71
La - Lu
Lanthanides
72
Hf
Hafnium
178.490
73
Ta
Tantalum
180.948
74
W
Tungsten
183.840
75
Re
Rhenium
186.207
76
Os
Osmium
190.230
77
Ir
Iridium
192.217
78
Pt
Platinum
195.078
79
Au
Gold
196.967
80
Hg
Mercury
200.590
81
Tl
Thallium
204.383
82
Pb
Lead
207.200
83
Bi
Bismuth
208.980
84
Po
Polonium
209
85
At
Astatine
210
86
Rn
Radon
222
7
87
Fr
Francium
223
88
Ra
Radium
226
89 - 103
Ac - Lr
Actinides
104
Rf
Rutherfordium
261
105
Db
Dubnium
262
106
Sg
Seaborgium
266
107
Bh
Bohrium
264
108
Hs
Hassium
277
109
Mt
Meitnerium
268
110
Ds
Darmstadtium
281
111
Rg
Roentgenium
272
112
Cn
Copernicium
285
113
Nh
Nihonium
284
114
Fl
Flerovium
289
115
Mc
Moscovium
288
116
Lv
Livermorium
292
117
Ts
Tennessine
294
118
Og
Oganesson
294
Lanthanides
57
La
Lanthanum
138.905
58
Ce
Cerium
140.116
59
Pr
Praseodymium
140.908
60
Nd
Neodymium
144.240
61
Pm
Promethium
145
62
Sm
Samarium
150.360
63
Eu
Europium
151.964
64
Gd
Gadolinium
157.250
65
Tb
Terbium
158.925
66
Dy
Dysprosium
162.500
67
Ho
Holmium
164.930
68
Er
Erbium
167.259
69
Tm
Thulium
168.934
70
Yb
Ytterbium
173.040
71
Lu
Lutetium
174.967
Actinides
89
Ac
Actinium
227
90
Th
Thorium
232.038
91
Pa
Protactinium
231.036
92
U
Uranium
238.029
93
Np
Neptunium
237
94
Pu
Plutonium
244
95
Am
Americium
243
96
Cm
Curium
247
97
Bk
Berkelium
247
98
Cf
Californium
251
99
Es
Einsteinium
252
100
Fm
Fermium
257
101
Md
Mendelevium
258
102
No
Nobelium
259
103
Lr
Lawrencium
262

Facts

NameScandiumPotassium
Atomic Number2119
Atomic SymbolScK
Atomic Weight44.95591 39.0983
Phase at STPSolid Solid
ColorSilver Silver
Metallic ClassificationTransition Metal Alkali Metal
Group in Periodic Tablegroup 3 group 1
Group Namescandium familylithium family
Period in Periodic Tableperiod 4 period 4
Block in Periodic Tabled -blocks -block
Electronic Configuration[Ar] 3d1 4s2 [Ar] 4s1
Electronic Shell Structure (Electrons per shell)2, 8, 9, 22, 8, 8, 1
Melting Point1814 K336.53 K
Boiling Point3103 K1032 K
CAS NumberCAS7440-20-2 CAS7440-09-7
Neighborhood ElementsNeighborhood Elements of ScandiumNeighborhood Elements of Potassium

History

HistoryThe element Scandium was discovered by F. Nilson in year 1879 in Sweden. Scandium derived its name from Scandia, the Latin name for Scandinavia.The element Potassium was discovered by H. Davy in year 1807 in United Kingdom. Potassium derived its name from New Latin potassa, 'potash' (kalium in Latin).
DiscoveryF. Nilson (1879)H. Davy (1807)
IsolatedF. Nilson (1879)H. Davy (1807)

Presence: Abundance in Nature and Around Us

Parts per billion (ppb) by weight / by atoms (1ppb =10^-7 %)

Abundance in Universe30 / 13000 / 100
Abundance in Sun40 / 14000 / 100
Abundance in Meteorites6500 / 2900710000 / 370000
Abundance in Earth's Crust26000 / 1200015000000 / 7800000
Abundance in Oceans0.0015 / 0.00021416000 / 65800
Abundance in Humans- / -2000000 / 320000

Crystal Structure and Atomic Structure

Atomic Volume15.061 cm3/mol45.68 cm3/mol
Atomic Radius184 pm243 pm
Covalent Radius144 pm196 pm
Van der Waals Radius211 pm275 pm
Atomic SpectrumAtomic Spectrum of Scandium | SchoolMyKidsAtomic Spectrum of Potassium | SchoolMyKids
Lattice Constant330.9, 330.9, 527.33 pm532.8, 532.8, 532.8 pm
Lattice Angleπ/2, π/2, 2 π/3π/2, π/2, π/2
Space Group NameP63/mmc Im_ 3m
Space Group Number194 229
Crystal Structure

Simple Hexagonal

21 Sc Scandium - Crystal Structure | SchoolMyKids

Body Centered Cubic

19 K Potassium - Crystal Structure | SchoolMyKids

Atomic and Orbital Properties

Atomic Number2119
Number of Electrons (with no charge)2119
Number of Protons2119
Mass Number44.9559139.0983
Number of Neutrons2420
Shell structure (Electrons per energy level)2, 8, 9, 22, 8, 8, 1
Electron Configuration[Ar] 3d1 4s2 [Ar] 4s1
Valence Electrons3d1 4s2 4s1
Oxidation State31
Atomic Term Symbol (Quantum Numbers)2D3/2 2S1/2
Shell structure21 Sc Scandium - Electron Shell Structure | SchoolMyKids19 K Potassium - Electron Shell Structure | SchoolMyKids

Isotopes and Nuclear Properties

Scandium has 1 stable naturally occuring isotopes while Potassium has 2 stable naturally occuring isotopes.

Known Isotopes36Sc, 37Sc, 38Sc, 39Sc, 40Sc, 41Sc, 42Sc, 43Sc, 44Sc, 45Sc, 46Sc, 47Sc, 48Sc, 49Sc, 50Sc, 51Sc, 52Sc, 53Sc, 54Sc, 55Sc, 56Sc, 57Sc, 58Sc, 59Sc, 60Sc32K, 33K, 34K, 35K, 36K, 37K, 38K, 39K, 40K, 41K, 42K, 43K, 44K, 45K, 46K, 47K, 48K, 49K, 50K, 51K, 52K, 53K, 54K, 55K
Stable IsotopesNaturally occurring stable isotopes:

45Sc

Naturally occurring stable isotopes:

39K, 41K

Neutron Cross Section 27.2 2.1
Neutron Mass Absorption 0.025 0.0018

Chemical Properties: Ionization Energies and electron affinity

Valence or Valency3 1
Electronegativity1.36 Pauling Scale0.82 Pauling Scale
Electron Affinity18.1 kJ/mol48.4 kJ/mol
Ionization Energies
1st: 633.1 kJ/mol
2nd: 1235 kJ/mol
3rd: 2388.6 kJ/mol
4th: 7090.6 kJ/mol
5th: 8843 kJ/mol
6th: 10679 kJ/mol
7th: 13310 kJ/mol
8th: 15250 kJ/mol
9th: 17370 kJ/mol
10th: 21726 kJ/mol
11th: 24102 kJ/mol
12th: 66320 kJ/mol
13th: 73010 kJ/mol
14th: 80160 kJ/mol
15th: 89490 kJ/mol
16th: 97400 kJ/mol
17th: 105600 kJ/mol
18th: 117000 kJ/mol
19th: 124270 kJ/mol
20th: 547530 kJ/mol
21st: 582163 kJ/mol
1st: 418.8 kJ/mol
2nd: 3052 kJ/mol
3rd: 4420 kJ/mol
4th: 5877 kJ/mol
5th: 7975 kJ/mol
6th: 9590 kJ/mol
7th: 11343 kJ/mol
8th: 14944 kJ/mol
9th: 16963.7 kJ/mol
10th: 48610 kJ/mol
11th: 54490 kJ/mol
12th: 60730 kJ/mol
13th: 68950 kJ/mol
14th: 75900 kJ/mol
15th: 83080 kJ/mol
16th: 93400 kJ/mol
17th: 99710 kJ/mol
18th: 444880 kJ/mol
19th: 476063 kJ/mol

Physical Properties

Density2.985 g/cm30.856 g/cm3
Molar Volume15.061 cm3/mol45.68 cm3/mol

Elastic Properties

Young Modulus74 -
Shear Modulus29 GPa1.3 GPa
Bulk Modulus57 GPa3.1 GPa
Poisson Ratio0.28 -

Hardness - Tests to Measure of Hardness of Element

Mohs Hardness- 0.4 MPa
Vickers Hardness- -
Brinell Hardness750 MPa0.363 MPa

Electrical Properties

Electrical Conductivity1800000 S/m14000000 S/m
Resistivity 5.5e-7 m Ω7e-8 m Ω
Superconducting Point0.05 -

Heat and Conduction Properties

Thermal Conductivity16 W/(m K)100 W/(m K)
Thermal Expansion0.0000102 /K-

Magnetic Properties

Magnetic TypeParamagnetic Paramagnetic
Curie Point- -
Mass Magnetic Susceptibility8.8e-8 m3/kg6.7e-9 m3/kg
Molar Magnetic Susceptibility3.956e-9 m3/mol2.62e-10 m3/mol
Volume Magnetic Susceptibility0.0002627 0.00000574

Optical Properties

Refractive Index- -

Acoustic Properties

Speed of Sound- 2000 m/s

Thermal Properties - Enthalpies and thermodynamics

Melting Point1814 K336.53 K
Boiling Point3103 K1032 K
Critical Temperature- 2223 K
Superconducting Point0.05 -

Enthalpies

Heat of Fusion16 kJ/mol2.33 kJ/mol
Heat of Vaporization318 kJ/mol76.9 kJ/mol
Heat of Combustion- -182 J/(kg K)

Regulatory and Health - Health and Safety Parameters and Guidelines

CAS NumberCAS7440-20-2 CAS7440-09-7
RTECS Number- RTECSTS6460000
DOT Hazard Class4.1 4.3
DOT Numbers3089 2257
EU Number- -
NFPA Fire Rating- 3
NFPA Hazards- Water Reactive
NFPA Health Rating- 3
NFPA Reactivity Rating- 2
AutoIgnition Point- 440 °C
Flashpoint- -

Compare With Other Elements

Compare Scandium with all Group 3 elements

Compare Scandium with all Period 4 elements

Compare Scandium with all Transition Metal elements

Compare Potassium with all Group 1 elements

Compare Potassium with all Period 4 elements

Compare Potassium with all Alkali Metal elements