Why metal is a conductor?

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions.

Are metals shiny?

Metals are shiny because metalscontain free electrons that vibrate when they come in contact with light. When the electrons vibrate, they produce their own light. This is reflected back and is what creates theshiny, lustrous appearance of metal.

Is germanium shiny or dull?

It is similar in properties to the other metalloids near it in the periodic table which are silicon and arsenic. Germanium atoms have 32 electrons and 32 protons with 4 valence electrons in the outer shell. Under standard conditions Germanium is a hard, shiny, silvery-gray solid that is very brittle.

Where is selenium most commonly found?

While rare, selenium is normally found in minerals. Of the lesser members in the sulfur family, selenium is the most abundant in nature, often found in copper and lead mining.

Where can Selenium be found?

Brazil nuts, seafoods, and organ meats are the richest food sources of selenium [1]. Other sources include muscle meats, cereals and other grains, and dairy products.

What household items have selenium?

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.

Can you take selenium everyday?

When taken by mouth: Selenium is LIKELY SAFE for most people when taken by mouth in doses less than 400 mcg daily, short-term. However, selenium is POSSIBLY UNSAFE when taken by mouth in high doses or for a long time. Taking doses above 400 mcg can increase the risk of developing selenium toxicity.