Keep reading to learn which foods provide the most selenium.
- Brazil nuts. Brazil nuts are one of the best sources of selenium.
- Fish. Yellowfin tuna contains about 92 mcg of selenium per 3 ounces (oz), making it an excellent source of selenium.
- Ham.
- Enriched foods.
- Pork.
- Beef.
- Turkey.
- Chicken.
Good natural food sources of selenium include:
- Nuts, like Brazil nuts and walnuts.
- Many fresh and saltwater fish, like tuna, cod, red snapper, and herring.
- Beef and poultry.
- Grains.
Write a Review
Redmond Selenium 90 is a premium sea salt with naturally occurring essential trace minerals. Selenium 90 is also fortified with added selenium (90ppm), copper, manganese, cobalt, iodine and zinc.Selenium is found in metal sulfide ores, where it partially replaces the sulfur. Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. Minerals that are pure selenide or selenate compounds are known but rare.
This colourless solid is prepared by the reaction of selenium with a solution of sodium in liquid ammonia at −40 °C. Alternatively, sodium selenide can be prepared by the reaction of gaseous hydrogen selenide with metallic sodium at 100 °C.
Effects of selenium on the environment
Low levels of selenium can end up in soils or water through weathering of rocks. When animals absorb or accumulate extremely high concentrations of selenium it can cause reproductive failure and birth defects. Sources of periodic table.Selenium (Se), a chemical element in the oxygen group (Group 16 [VIa] of the periodic table), closely allied in chemical and physical properties with the elements sulfur and tellurium. Selenium is a metalloid (an element intermediate in properties between the metals and the nonmetals).
Selenium is a good conductor of electricity in presence of light. This phenomenon is called photoconductivity.
A polyatomic element is a chemical element that naturally exists as a compound molecule containing more than two atoms of the same element joined together by covalent bonds. There are only three polyatomic elements found on the periodic table: selenium, phosphorous and sulfur.
1 mole is equal to 1 moles Selenium, or 78.96 grams.
What is the freezing point of selenium?
A Powerful Antioxidant – Selenium is an antioxidant that fights free radicals that damage cells and may lead to premature aging. Selenium's antioxidant status also helps support the immune system naturally. Healthy Thyroid Support – Much like iodine, selenium is important for normal thyroid function.
Where was the element selenium first discovered?
Jöns Jacob Berzelius
Johan Gottlieb Gahn
Selenium is a mineral that plays a role in many bodily functions. It may protect against cancer, thyroid problems, cognitive decline, and asthma, but more research is needed. Brazil nuts, some fish, brown rice, and eggs are good sources. The best source of nutrients is food.
The element is named after Selene, the Greek goddess of the moon. The image is of a crescent moon against a cratered surface. A semi-metal that can exist in two forms: as a silvery metal or as a red powder. The biggest use of selenium is as an additive to glass.
Selenium deficiency can produce a range of symptoms. The most common ones are: infertility in men and women. muscle weakness.
Brazil nuts are a very good source of selenium. Fish, shellfish, red meat, grains, eggs, chicken, liver, and garlic are also good sources. Meats produced from animals that ate grains or plants found in selenium-rich soil have higher levels of selenium.
Most selenium is obtained as a by-product of copper ore processing. Selenium is occasionally found in pure form. It occurs in the rare minerals clausthalite and crooksite. Despite the name, the mineral selenite actually contains no selenium.
Selenium specifically has an electron configuration of 2-8-18-6. The six electrons in the outermost shell allow selenium to have a variety of valence numbers. Selenium compounds have been found that have valences of -2, 4, and 6. Speaking of the number six, selenium is found to have six naturally occurring isotopes.
Selenium toxicity can occur with acute or chronic ingestion of excess selenium. Symptoms of selenium toxicity include nausea; vomiting; nail discoloration, brittleness, and loss; hair loss; fatigue; irritability; and foul breath odor (often described as “garlic breath”).
Selenium Side Effects
- nausea, vomiting;
- lack of energy, feeling irritable or very tired.
- hair loss, mild rash, brittle or painful fingernails, or white streaks on the nails;
- tremors, feeling light-headed;
- muscle tenderness;
- flushing (warmth, redness, or tingly feeling);
- metallic taste, bad breath, strong body odor; or.
Technical data for Selenium
| Overview |
|---|
| Name | Selenium |
|---|
| Density (Liquid) | 3.99 g/cm3 |
| Molar Volume | 0.000016387 |
| Brinell Hardness | 736 MPa |
It would be easier for the element to become stable by accepting 2 electrons rather than donating 6 of its electrons. This suggests that the charge of the selenium ion must be −2 to undergo an ionic bond. Therefore, the charge on the ion that selenium forms in an ionic compound is −2 .
Bromine is a chemical element with symbol Br and atomic number 35. It is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Its properties are thus intermediate between those of chlorine and iodine.
The crystalline (metallic) form of selenium has a melting point of217°C (423°F ) and a boiling point of 685°C (1,260°F). Its density is 4.5 grams per cubic centimeter. Selenium from the Greek word for moon, selene .
Selenium is a powerful mineral that is essential for the proper functioning of your body. It plays a critical role in metabolism and thyroid function and helps protect your body from damage caused by oxidative stress.
Selenium Intakes and Status
Adult men have higher daily intakes (134 mcg from foods and 151 mcg from foods and supplements) than adult women (93 mcg from foods and 108 mcg from foods and supplements). In the United States, 18% to 19% of adults and children use a dietary supplement containing selenium [18].Technical data for Selenium
| Overview |
|---|
| Name | Selenium |
|---|
| Atomic Weight | 78.971 |
| Density | 4.819 g/cm3 |
| Melting Point | 221 °C[note] |
Selenium is a nutritionally essential element. People need selenium for healthy joints, heart and eyes. It plays a critical role in DNA synthesis, the immune system and the reproductive system. It also helps fight cancer and other diseases. The element resembles sulfur in its makeup.
The nonmetals arsenic (As), tellurium (Te) and selenium (Se) are also named like the transition metals, and can form either cations or anions. Rule 2: anions. The anion name is formed from the name of the element, but “ide” replaces the normal ending in the elements name.
