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Selenium

Selenium (Se) is a nonmetal (recognized a metalloid) related to sulfur and is often used in glassmaking. Although it can be toxic, it is needed in trace amounts for proper body function.

424 Questions

Why selenium monoxide does not exist?

Well, isn't that just a happy little mystery! You see, selenium monoxide doesn't exist because selenium prefers to form compounds with a higher oxidation state, like selenium dioxide. It's just following its natural inclination to create more stable and harmonious chemical bonds. Just like in painting, sometimes the most beautiful creations come from the choices we make along the way.

What covers a silver spoon is kept in egg yolk?

Silver utensils can become tarnished when exposed to sulfur-containing foods like egg yolks. The sulfur in the egg yolk reacts with the silver to create silver sulfide, resulting in the tarnished appearance. To prevent tarnishing, it is best to avoid prolonged contact between silver utensils and sulfur-containing foods.

When is the best time to take selenium?

The best time to take selenium is typically with food to help with absorption. It is recommended to take it at the same time each day to maintain consistency in your routine. Always follow the dosage instructions provided by your healthcare provider or on the supplement label.

What was the name predicted for gallium by mendeleevs?

Mendeleev predicted the name "eka-aluminium" for the element that is now known as gallium. This naming convention was based on the positions of the elements in his periodic table.

How many filled shells in selenium?

Selenium has 5 filled electron shells. The electron configuration for selenium is 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4.

Can over dose of selenium cause a metallic taste in your mouth?

Yes, an overdose of selenium can cause a metallic taste in the mouth along with other symptoms such as gastrointestinal upset, hair loss, and in severe cases, organ damage. It is important to avoid consuming excessive amounts of selenium to prevent toxicity.

Does selenium need to gain 2 electrons to for an octet?

Yes, selenium needs to gain 2 electrons to achieve an octet configuration because it has 6 valence electrons in its outer shell. By gaining 2 more electrons, selenium can reach a stable electron configuration with 8 electrons in its outermost shell.

Is the element selenium a member of group 6A?

Yes, selenium is a member of Group 16, also known as Group 6A, in the periodic table. This group is known as the chalcogens, and selenium shares similar chemical properties with the other elements in this group like oxygen and sulfur.

How can you mix hcl acid with water by volume?

To safely mix HCl acid with water by volume, add the desired volume of water to a container, then slowly and carefully add the required volume of HCl acid to the water while constantly stirring. Avoid adding water to acid, as this can cause splattering and increase the risk of injury due to the exothermic reaction. Remember to always wear appropriate protective gear such as gloves and goggles when handling chemicals.

What is the result of a deficiency of selenium in the ration of cattle?

A deficiency of selenium in cattle can lead to white muscle disease, reproductive issues, impaired immune function, and reduced growth rates. Selenium deficiency can also increase the risk of other health problems, such as retained placentas and calf mortality.

What is the chemical formula for the compound formed between iron and selenium?

The compound formed between iron and selenium is iron(II) selenide, with the chemical formula FeSe.

Can you put on weight taking selenium tablets?

No, selenium supplements are not known to cause weight gain. In fact, selenium is an essential mineral that plays a role in metabolism and thyroid function, and deficiency can lead to weight loss or difficulty in gaining weight. However, it is important to take selenium supplements in moderation, as excessive intake can be harmful.

What is the function of antioxidant in matals?

Antioxidants in metals help to prevent or slow down corrosion by protecting the metal from oxidation. They do this by sacrificing themselves to react with free radicals or oxygen molecules, forming a protective barrier on the metal surface. This helps to extend the lifespan and maintain the appearance of the metal.

What effects do too much selenium have on your body?

Consuming too much selenium can lead to selenosis, causing symptoms such as hair loss, brittle nails, nausea, and diarrhea. In severe cases, excessive selenium intake can result in organ damage and neurological issues. It is important to stay within the recommended daily intake to avoid these negative effects.

What are the protons in -80 selenium?

Selenium has 34 protons. This can be determined by looking at its atomic number on the periodic table which is 34. Therefore, the number of protons in -80 selenium is 34.

How many neutrons are found in -80 selenium?

Selenium has an atomic number of 34, which means it has 34 protons. To find the number of neutrons in selenium-80, subtract the atomic number (34) from the isotope number (80). Therefore, selenium-80 would have 46 neutrons (80 - 34).

Is selenium bigger than polonium?

Yes, selenium is bigger than polonium. Selenium is a nonmetal element with an atomic number of 34 and a larger atomic radius compared to polonium, which is a metalloid element with an atomic number of 84 and a smaller atomic radius.

Is selenium stable or unstable?

Selenium is generally considered stable in its elemental form. However, some of its isotopes are unstable and undergo radioactive decay.

What vitamins haves selenium in them?

Selenium is a mineral, not a vitamin, and can be found in a variety of foods like Brazil nuts, fish, poultry, eggs, and whole grains. It is important for immune function and thyroid health. Supplementing with selenium should be done carefully, as too much can be harmful.

Can people be allergic to selenium?

Yes, some people can be allergic to selenium, although it is rare. Symptoms of a selenium allergy may include skin rashes, itching, and difficulty breathing. Consulting with a healthcare provider for proper diagnosis and treatment is recommended.

Why was selenium not identified as an element until 1818?

Selenium was not identified as an element until 1818 because it is a trace element found in a limited number of ores and does not occur in its pure form in nature. Its discovery was also hindered by its similarity to tellurium, another element with similar chemical properties, which made it difficult to separate them. Additionally, advancements in analytical chemistry techniques were necessary for its isolation and identification.