Scandium Element (Periodic Table)

Scandium

Scandium (Sc) is a chemical element of the periodic table, located in the group 3 and the period 4, and has the atomic number 21. It is a soft, silvery-white transition metal, whose name comes from the Latin word “Scandia”, which means Scandinavia. It is counted as one of the rare earth elements.

group
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
period
1
1
H
2
He
2
3
Li
4
Be
5
B
6
C
7
N
8
O
9
F
10
Ne
3
11
Na
12
Mg
13
Al
14
Si
15
P
16
S
17
Cl
18
Ar
4
19
K
20
Ca
21
Sc
22
Ti
23
V
24
Cr
25
Mn
26
Fe
27
Co
28
Ni
29
Cu
30
Zn
31
Ga
32
Ge
33
As
34
Se
35
Br
36
Kr
5
37
Rb
38
Sr
39
Y
40
Zr
41
Nb
42
Mo
43
Tc
44
Ru
45
Rh
46
Pd
47
Ag
48
Cd
49
In
50
Sn
51
Sb
52
Te
53
I
54
Xe
6
55
Cs
56
Ba
72
Hf
73
Ta
74
W
75
Re
76
Os
77
Ir
78
Pt
79
Au
80
Hg
81
Tl
82
Pb
83
Bi
84
Po
85
At
86
Rn
7
87
Fr
88
Ra
104
Rf
105
Db
106
Sg
107
Bh
108
Hs
109
Mt
110
Ds
111
Rg
112
Cn
113
Nh
114
Fl
115
Mc
116
Lv
117
Ts
118
Og
57
La
58
Ce
59
Pr
60
Nd
61
Pm
62
Sm
63
Eu
64
Gd
65
Tb
66
Dy
67
Ho
68
Er
69
Tm
70
Yb
71
Lu
89
Ac
90
Th
91
Pa
92
U
93
Np
94
Pu
95
Am
96
Cm
97
Bk
98
Cf
99
Es
100
Fm
101
Md
102
No
103
Lr
– d block

FAQs on Scandium Element

Scandium
‣ What does scandium look like?

Appearance: silvery white
‣ When was the element scandium discovered and by who?

Prediction: Dmitri Mendeleev (1871)
Discovery and first isolation: Lars Fredrik Nilson (1879)
‣ Where is scandium found on the periodic table?

Scandium Periodic Table

Location: Scandium is found in the third column of the periodic table, next to the calcium element.
‣ What is scandium’s atomic number?

Atomic number (Z): 21
‣ What is the symbol of scandium?

Symbol: Sc
Scandium atomic weight: 44.955908
‣ What block does scandium belong to?

Block: d-block
‣ What group does scandium belong to?

Group: 3
‣ What period is scandium on the periodic table?

Period: 4
‣ What is the atomic radius of scandium?

Atomic radius: empirical: 162 pm
Scandium covalent radius: 170±7 pm
Scandium Van der Waals radius: 211 pm
‣ What is the melting point of scandium?

Melting point: 1814 K (1541 °C, 2806 °F)
‣ What is the boiling point of scandium?

Boiling point: 3109 K (2836 °C, 5136 °F)
‣ How many electron shells does scandium have?

Electrons per shell: 2, 8, 9, 2
‣ What is the ground state electron configuration of scandium?

Electron configuration: [Ar] 3d1 4s2
‣ What is the ionization energy of scandium?

Ionization energies:
1st: 633.1 kJ/mol
2nd: 1250.0 kJ/mol
3rd: 2388.6 kJ/mol
‣ What is the phase of scandium?

Phase (at r.t): solid
‣ What is scandium’s density?

Density (near r.t): 2.985 g/cm3
when liquid (at m.p): 2.80 g/cm3
Scandium magnetic ordering: paramagnetic
Scandium natural occurrence: primordial
‣ What is the oxidation state of scandium?

Oxidation state: +3
‣ What’s the electronegativity of scandium?

Electronegativity: Pauling scale: 1.36
Scandium poisson’s ratio: 0.279
Scandium heat of fusion: 14.1 kJ/mol
Scandium heat of vaporization: 332.7 kJ/mol
Scandium molar heat capacity: 25.52 J/(mol K)
Scandium molar magnetic susceptibility: +315.0 × 10-6 cm3/mol (292 K)
Scandium crystal structure: hexagonal close-packed (hcp)
Thermal expansion of scandium: α, poly: 10.2 µm/(m.K) (at r.t)
Thermal conductivity of scandium: 15.8 W/(m.K)
Scandium electrical resistivity: α, poly: 562 nΩ.m (at r.t)
‣ What is the hardness of scandium?

Brinell hardness: 736-1200 MPa
Young’s modulus of scandium: 74.4 GPa
Shear modulus of scandium: 29.1 GPa
Bulk modulus of scandium: 56.6 GPa
Scandium CAS number: 7440-20-2

‣ Scandium vapor pressure

Vapor pressure
P (Pa)1101001 k10 k100 k
at T (K)16451804(2006)(266)(2613)(3101)

‣ How many isotopes does scandium have?

Main isotopes of scandium
IsotopeAbundanceHalf-life (t1/2)Decay modeProduct
44m2Scsyn58.61 hIT
γ
ε
44Sc
44Sc
44Ca
45Sc100 %stable
46Scsyn83.79 dβ
γ
46Ti
47Scsyn80.38 dβ
γ
47Ti
48Scsyn43.67 hβ
γ
48Ti

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