What is group 6A called on the periodic table?

chalcogens
Group 6A (or VIA) of the periodic table are the chalcogens: the non-metals oxygen (O), sulfur (S), and selenium (Se), the metalloid tellurium (Te), and the metal polonium (Po).

Why are Group 6 elements called chalcogens?

The group VIA elements are called chalcogens because most ores of copper (Greek chalkos) are oxides or sulfides, and such ores contain traces of selenium and tellurium. Atomic properties of the chalcogens are summarized in the table. This reaction occurs naturally as a result of lightning bolts.

What are the 6A elements?

Polonium is one of five elements that belong to the chalcogens, or Group 6A elements, which include oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and polonium (Po).

How did gadolinium get its name?

Gadolinium is named after Johan Gadolin, a Finnish scientist who was both a chemist and geologist. In 1792 he isolated the first rare earth compound, what we now know as yttrium oxide, from a black mineral that had been discovered at Ytterby in Sweden.

What is name of the element in Period 6 group 6?

Its members are chromium (Cr), molybdenum (Mo), tungsten (W), and seaborgium (Sg). These are all transition metals and chromium, molybdenum and tungsten are refractory metals. Group 6 in the periodic table. Hydrogen. Helium.

Which group are called chalcogens?

Group 16
oxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and livermorium (Lv).

What are the properties of group 6A?

Group 6A elements have an electron configuration that ends in ns2np4. For Group 6A elements, the most common oxidation numbers are 4, 6, and 2. Oxygen is paramagnetic because there are unpaired electrons in O2 molecules. Liquid oxygen is held between the poles of a magnet because of its attraction to the magnet.

What is another name for gadolinium?

Sometimes called MRI contrast media, agents or dyes, gadolinium-based contrast agents (GBCAs) provide doctors and radiologists with sharper, more accurate MRI images.

Is gadolinium metal toxic?

Gadolinium is a rare earth metal that aligns with an MRI’s powerful magnetic field, but it is also toxic, so in its injectable form the metal is bound to chelating molecules to block its dangerous effects.

What is group 7A on the periodic table called?

Group 7A (or VIIA) of the periodic table are the halogens: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), and astatine (At). The name “halogen” means “salt former”, derived from the Greek words halo- (“salt”) and -gen (“formation”).