38 Sr Strontium 87,62 u

Strontium

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Periyot
5
Grup
2
Blok
s-Blok
Faz (STP)
Solid

Strontium is an alkaline earth metal that produces a brilliant red flame. It is used in fireworks, flares, and toothpaste for sensitive teeth.

About Strontium

Known for the brilliant red flame it produces when burned, strontium is an alkaline earth metal of atomic number 38 and atomic mass 87.62. Two valence electrons ([Kr] 5s2) give it an electronegativity of 0.95, and the element is a solid under standard conditions. Strontium belongs to group 2, period 5, directly below calcium, which it resembles chemically; like calcium it forms a doubly charged ion and, being reactive, is found only in combined form. Its characteristic flame color underlies a long history of use in fireworks and signal flares, and strontium compounds are also incorporated into toothpaste formulated for sensitive teeth.

Fiziksel Özellikler

Atom Kütlesi 87.62 u
STP'de Faz Solid

Elektronik Özellikler

Elektronegatiflik 0.95

Elektron Yapısı

Yapılandırma [Kr] 5s²

Electron Shell Configuration

Strontium electron shell configuration Sr 2e⁻ 8e⁻ 18e⁻ 8e⁻ 2e⁻
Electron shell structure of Strontium — electrons per shell.
Shell Electrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 8
5 (O) 2

Position in Periodic Table

Strontium position in the periodic table Sr

Blok ve Periyot

Blok

s p d f

Periyot

1 2 3 4 5 6 7

Periyodik Tablo

Lantanitler Aktinitler

Sr İçeren Reaksiyonlar

Formation of Strontium Oxide

2Sr + O₂ → 2SrO

Synthesis

Beta Decay of Strontium-90

⁹⁰Sr → ⁹⁰Y + e⁻ + ν̄ₑ

Nuclear

Compounds Containing Strontium

Strontium Carbonate

SrCO₃

Strontium Oxide

SrO

Daha fazla Toprak Alkali Metal

4 Be Beryllium 12 Mg Magnesium 20 Ca Calcium 56 Ba Barium 88 Ra Radium

Frequently Asked Questions

What is Strontium?
Strontium (Sr) is a chemical element with atomic number 38. It is a solid at standard temperature and pressure, classified as a toprak alkali metal.
What are the key properties of Strontium?
Strontium has an atomic mass of 87.62 u.
What is the electron configuration of Strontium?
The electron configuration of Strontium is [Kr] 5s2. It is in the s-block of the periodic table.
What is the electronegativity of Strontium?
Strontium has an electronegativity of 0.95 on the Pauling scale.