The symbol Sr represents the element strontium.

Strontium is a chemical element with the symbol Sr and atomic number 38. It is a soft, silver-white metal that is highly reactive chemically.

Yes, strontium is a rare earth metal. It is a soft, silver-white metal that is found in the earth’s crust. It is not as common as some of the other rare earth metals, but it is still fairly plentiful.

The dangers of strontium are mainly due to its radioactivity. It can cause radiation poisoning, and long-term exposure can increase the risk of cancer.

Yes, strontium is poisonous. It is a heavy metal that can cause health problems if it is ingested or inhaled.

Strontium is a metallic element that has a red-orange color. It is used in fireworks and other pyrotechnics because of its color.

The first person to discover strontium was Sir Humphry Davy in 1808.

The atoms of strontium are held together by ionic bonding. In an ionic bond, one atom donates an electron to another atom. This creates a positive ion (the donor) and a negative ion (the recipient). The positive and negative ions are attracted to each other and held together by the force of attraction.

  1. Strontium is used in fireworks to create a red color. 2. Strontium is used in some types of glass to increase their resistance to heat and scratching.3. Strontium is used as an additive in some types of concrete to improve its strength and resistance to weathering.

The price of strontium can vary depending on the grade and quantity purchased. Generally, strontium costs between $10 and $15 per kilogram.

Strontium is found in the earth’s crust and can be mined from ores such as celestite and strontianite. It is also present in seawater and can be extracted from there through the process of reverse osmosis.

Lanthanides are not manmade, but they are often produced through human activity. Mining and refining of rare earth minerals can release lanthanides into the environment. Lanthanides can also be released into the environment through the burning of coal and other fossil fuels.