Selenium

The mass of selenium is approximately 78.96 atomic mass units. The atomic number of selenium is 34.

Since Selenium is in the same column as Oxygen and Sulfur, you would expect it to bond just like them. As a halogen, chlorine wants to make one bond so your final answer would be. Cl-Se-Cl with two lone pairs (that's 4 electrons) on selenium and 3 lone pairs (that's six electrons) on EACH chlorine.

You can increase your selenium intake by consuming foods rich in selenium such as brazil nuts, seafood, organ meats, and sunflower seeds. Alternatively, you can take selenium supplements but make sure to consult with a healthcare provider before doing so to avoid any potential side effects from excessive selenium intake.

The property of selenium used in photocopiers and laser printers is its photoconductivity. Selenium becomes more conductive when light is shone on it, allowing images to be formed and transferred onto paper in these devices.

Selenium combined with calcium is a mineral supplement that provides both selenium and calcium in a single dosage. Selenium is an essential mineral with antioxidant properties, while calcium is vital for bone health and muscle function. This combination may help support overall health, especially for individuals who have deficiencies in either mineral.

3. Thats what the DAT says. But I think its 2. 3p2

Yes, selenium dichloride (SeCl2) forms covalent bonds. Selenium, being a nonmetal, typically forms covalent bonds by sharing electrons with other nonmetals like chlorine to achieve a stable electron configuration.

strontium is not essential for living organisms. Sulfur is essential because all living things need it to survive. They also need sodium and selenium.

Selenium fluoride bond is polar because fluorine is more electro-negative than selenium. Hence the shared paired of electrons are more towards fluorine giving fluorine a partial negative charge and selenium a partial positive charge.

Nitrogen is not a member of group 6A. It belongs to group 5A on the periodic table. The other elements - oxygen, selenium, and sulfur - belong to group 6A.

Jöns Jacob Berzelius discovered selenium in 1817.

A deficiency of selenium is called selenodeficiency. It can lead to various health issues, including weakened immune function and increased risk of certain diseases.

Selenium is primarily extracted as a byproduct of copper refining from sulfide ores in countries like the United States, Canada, Japan, and Russia. Additionally, selenium can also be extracted from lead, zinc, and nickel ores in various mining operations around the world.

Selenium dioxide has stronger intermolecular forces than sulfur dioxide due to its larger atomic size, making it a solid at room temperature. Sulfur dioxide is a gas because it has weaker intermolecular forces due to its smaller atomic size.

0.321

Looked it up in the back of my textbook :)

Selsun Blue has selenium sulphide 1% and is available without prescription in US.

The atomic radius of selenium can be estimated to be approximately between 116 pm and 118 pm based on the trends in atomic radii going down a group in the periodic table. This is because atomic radius generally increases as you move down a group, so selenium's atomic radius would be smaller than arsenic's and germanium's.

Selenium is a nonmetal element that appears as a gray, metallic-looking solid. It can exist in different forms, such as the red allotrope, which is an amorphous powder. Selenium has a noticeable odor that resembles that of radishes or rotten horseradish.

Sulfur and selenium form a covalent bond when they bond together, as both are nonmetals. In a covalent bond, the atoms share electron pairs to achieve a stable configuration.

Selenium is found in the Earth's crust and can be found in soil, water, and certain types of rocks. It is also naturally present in some foods, particularly in seafood, brazil nuts, and organ meats.

Selenium is primarily stored in the liver, kidneys, and muscles in the body. It can also be found in smaller amounts in the spleen, heart, and pancreas.

A lack of selenium can lead to a condition called Keshan disease, which is a type of cardiomyopathy affecting the heart muscle. Selenium deficiency can weaken the heart muscles and compromise cardiac function, potentially leading to heart failure. It is important to include selenium in the diet to prevent such health issues.