Table of Contents
Which family is called chalcogens?
oxygen family
The chalcogens (ore forming) (/ˈkælkədʒənz/ KAL-kə-jənz) are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po).
What elements are in the chalcogens family?
Group 6A (or VIA) of the periodic table are the chalcogens: the nonmetals oxygen (O), sulfur (S), and selenium (Se), the metalloid tellurium (Te), and the metal polonium (Po). The name “chalcogen” means “ore former,” derived from the Greek words chalcos (“ore”) and -gen (“formation”).
Why is Group 16 called chalcogens?
-Group-16 elements are also called chalcogens. They are called so because most of the copper ores have copper in the form of oxides and sulphides. They also contain small amounts of selenium and tellurium. The ores of copper are called ‘chalcos’ in Greek.
Is the chalcogen family reactive?
All chalcogens are very reactive to alkali earth metals. All chalcogens found in metallic ores are found in the form of ions. Lighter chalcogens such as sulfur and oxygen are non-toxic, and essential to all types of life.
In which family is potassium K found?
Alkali Metals
Group 1A — The Alkali Metals. Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
What is oxygen’s Element family?
Group 16 is the oxygen family. It consists of the elements oxygen, sulfur, selenium, tellurium, and polonium.
What group do Li K and Cs belong to?
alkali metals
Group 1A (or IA) of the periodic table are the alkali metals: hydrogen (H), lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr).
What group is fluorine and chlorine?
The Halogens
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”).
Do chalcogens gain or lose electrons?
Atoms are stable when they have eight valence electrons, so by gaining two, the chalcogens become stable. Electrons have a negative charge, and because most of the chalcogens gain two electrons, they get a -2 charge. This means that sulfur can lose electrons and become more positive.
What period is oxygen in on the periodic table?
2
Fact box
| Group | 16 | −218.79°C, −361.82°F, 54.36 K |
|---|---|---|
| Period | 2 | −182.962°C, −297.332°F, 90.188 K |
| Block | p | 0.001308 |
| Atomic number | 8 | 15.999 |
| State at 20°C | Gas | 16O |
What family is calcium in?
Alkaline Earth Metals
Group 2A — The Alkaline Earth Metals. Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). They are harder and less reactive than the alkali metals of Group 1A.
What are the names of the chalcogens element family?
Chalcogens are the name of the elements in the periodic table – group 16. The elements in this group are sometimes collectively referred to as the ‘oxygen family’. These elements include oxygen (O), sulfur (S), selenium (Se), polonium (Po), and tellurium(Te).
What are the properties of a chalcogenide?
The density, melting and boiling points, and atomic radius increases with bigger atomic weights. Oxygen, sulfur, and selenium are non-metals, while tellurium and polonium are semi-metals, and can conduct electricity. Usually, the oxidation number of these elements in a chalcogenide is -2.
What happens to Chalcogens as you go down the group?
Chalcogens become more metallic as you go down the group. This group contains nonmetals, metalloids, and metals. The chalcogens are a diverse group of elements: oxygen is vital to your survival, others have important uses, and one can be used as a murder weapon.
Where does the word chalcogen come from and what does it mean?
The word “chalcogen” is derived from a combination of the Greek word khalkόs (χαλκός) principally meaning copper (the term was also used for bronze / brass, any metal in the poetic sense, ore or coin ), and the Latinised Greek word genēs, meaning born or produced.