Strontium Timeline by Jesse Mendoza

(1790) Strontium Discovered

jesse30040759 — 2024-10-18 18:50:24 UTC

Strontium ore is identified by Adair Crawford in Strontian, Scotland. Being the first time it's recognized as distinct from other substances.

(1808) Strontium was Isolated

jesse30040759 — 2024-10-21 05:49:45 UTC

This marked the discovery of Strontium on 1808 as a pure element using electrolysis by Humphrey Davy.

(1830s) Sugar Refining Use

jesse30040759 — 2024-10-21 05:57:50 UTC

Strontium nitrate widely used in the sugar refining industry.

Strontium nitrate was crucial in separating sugar from molasses in sugar beet production, which helped boost the industry during this period.

(1875) Strontium in Pyrotechnics

jesse30040759 — 2024-10-21 06:01:22 UTC

Strontium nitrate was found to produce vibrant red colors in fireworks. The discovery increased the demand for strontium in pyrotechnics and led to its continued use in modern fireworks and flares because of its distinct red flame.

jesse30040759 — 2024-10-25 02:53:39 UTC

Group: 2 (Alkaline Earth Metals)

Period: 5

Family and Characteristics

Belongs to the Alkaline Earth Metals family. Key characteristics:

1. Reactivity: Highly reactive, especially with water, forming hydroxides and releasing hydrogen gas.

2. Shiny and Soft: When freshly cut, it appears silvery but oxidizes quickly.

3. Low Density: It’s relatively low in density compared to other metals.

4. Formation of Oxides: It forms oxides easily in the presence of oxygen (forms SrO when bu

rned).

jesse30040759 — 2024-10-25 02:57:46 UTC

Electron Configuration

Unabbreviated Electron Configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s²

Abbreviated Electron Configuration: [Kr] 5s²

Protons, Neutrons, and Electrons in a Neutral Atom

Protons: 38

Neutrons: 50 (for the most common isotope, Sr-88)

Electrons: 38

(1940s) Strontium Isotopes and Nuclear Research

jesse30040759 — 2024-10-25 03:34:39 UTC

Strontium-90 was identified as a byproduct of nuclear fission during the testing of atomic bombs in the 1940s. Due to its radioactivity and long half-life, Strontium-90 became a focus of research, especially regarding its health risks and environmental impact.

(2000s) Strontium in Medicine

jesse30040759 — 2024-10-25 03:40:28 UTC

Strontium ranelate was created in the early 2000s as a treatment for osteoporosis. It helps stimulate bone formation and slow down bone resorption, making it an essential compound in modern medicine for treating bone-related health conditions.

(1950s-2000s) Strontium Use in Television Sets

jesse30040759 — 2024-10-25 03:59:43 UTC

Strontium compounds, specifically strontium carbonate, were commonly used in cathode-ray tube televisions from the 1950s until the early 2000s. These TVs relied on strontium carbonate because strontium helped block harmful X-ray emissions from the electron beams inside. It also improved the physical properties of the glass, making it more resistant to breaking and enhancing the brightness of the images.

Periodic Trends

jesse30040759 — 2024-10-25 04:15:41 UTC

The electron affinity of strontium is 5.03 0.05206(6) eV kJ mol‑1.

It also has an electronegativity of 0.95 on the Pauling scale.(Doesn't strongly attract electrons)

It has an ionization energy of 549.5 kJ/mol.

Strontium has an atomic radius of approximately 215 pm (picometers).