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Strontium Metal


Sr

Ca

Ba

Mg

Fe

Si

Na

      99.5%min

     0.2%max

    0.1%max

    0.05%max

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99%min

0.3%max

0.3%max

0.1%max

0.05%max

0.02%max

0.1%max

Packing: packed in aluminium jar, 2.5kg/ a jar, then in iron drum with double-decked plastic bag full of argon gas, 50kg/drum

Note: Special requirements should be decided through negotiation between the seller and the buyer.

 

STRONTIUM

Ca

Sr

Ba


Periodic Table - Extended Periodic Table

General

Name, Symbol, Number

strontium, Sr, 38

Element category

alkaline earth metals

Group, Period, Block

2, 5, s

Appearance

silvery white metallic

Standard atomic weight

87.62(1)  gmol−1

Electron configuration

[Kr] 5s2

Electrons per shell

2, 8, 18, 8, 2

Physical properties

Phase

solid

Density (near r.t.)

2.64  gcm−3

Liquid density at m.p.

2.375  gcm−3

Melting point

1050 K
(777 , 1431 F)

Boiling point

1655 K
(1382 , 2520 F)

Heat of fusion

7.43  kJmol−1

Heat of vaporization

136.9  kJmol−1

Specific heat capacity

(25 ) 26.4  Jmol−1K−1

Vapor pressure

P(Pa)

1

10

100

1 k

10 k

100 k

at T(K)

796

882

990

1139

1345

1646

Atomic properties

Crystal structure

cubic face centered

Oxidation states

2, 1[1]
(strongly basic oxide)

Electronegativity

0.95 (Pauling scale)

Ionization energies
(more)

1st:  549.5  kJmol−1

2nd:  1064.2  kJmol−1

3rd:  4138  kJmol−1

Atomic radius

200  pm

Atomic radius (calc.)

219  pm

Covalent radius

192  pm

Miscellaneous

Magnetic ordering

paramagnetic

Electrical resistivity

(20 ) 132 n m

Thermal conductivity

(300 K) 35.4  Wm−1K−1

Thermal expansion

(25 ) 22.5  µmm−1K−1

Shear modulus

6.1  GPa

Poisson ratio

0.28

Mohs hardness

1.5

CAS registry number

7440-24-6

Most-stable isotopes

Main article: Isotopes of strontium

iso

NA

half-life

DM

DE (MeV)

DP

82Sr

syn

25.36 d

-

82Rb

83Sr

syn

1.35 d

-

83Rb

+

1.23

83Rb

0.76, 0.36

-

84Sr

0.56%

84Sr is stable with 46 neutrons

85Sr

syn

64.84 d

-

85Rb

0.514D

-

86Sr

9.86%

86Sr is stable with 48 neutrons

87Sr

7.0%

87Sr is stable with 49 neutrons

88Sr

82.58%

88Sr is stable with 50 neutrons

89Sr

syn

50.52 d

1.49

89Rb

-

0.909D

89Y

90Sr

syn

28.90 y

-

0.546

90Y



 

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