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Which group is called Chalcogens?

Which group is called Chalcogens? 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 3 things do elements in the same group have in common?

The elements in each group have the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons. They are the electrons involved in chemical bonds with other elements. Every element in the first column (group one) has one electron in its outer shell.

Why are 16 groups 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. … So, group-16 elements are named chalcogens.

Why is Group 15 called pnictogens?

Group 15 elements are also known as pnictogens because in Greek pigeon means to cholk or stifle. In the absence of the oxygen, molecular nitrogen has this property. That’s why group 15 elements are known as either nitrogen family or pnictogens.

What are the common characteristics in each group?

Carron and Mark Eys examined the many definitions of groups and identified five common characteristics: (1) common fate—sharing a common outcome with other members; (2) mutual benefit—an enjoyable, rewarding experience associated with group membership; (3) social structure—a stable organization of relationships among …

What do all Group 2 elements have in common?

The property that is common to all group 2 elements is that they tend to form ionic bonds by losing electrons making these atoms positive charge. They are called cations. These elements are beryllium, magnesium, calcium, strontium, and radium.

Which groups are the most reactive?

Reactivity of Group 1 Elements

Hydrogen is a very reactive gas, and the alkali metals are even more reactive. In fact, they are the most reactive metals and, along with the elements in group 17, are the most reactive of all elements.

Why are Group 17 elements called chalcogens?

The group 17 elements include fluorine(F), chlorine(Cl), bromine(Br), iodine(I) and astatine(At) from the top to the bottom. They are called “halogens” because they give salts when they react with metals.

What is the most reactive element in group 16?

Oxygen is the periodic table’s most reactive portion. In the periodic table, it is the second most electronegative product, making it the group’s most reactive. The oxygen group is sometimes called group 16 elements of the periodic table.

What is Group 17 called?

Halogen, any of the six nonmetallic elements that constitute Group 17 (Group VIIa) of the periodic table. The halogen elements are fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At), and tennessine (Ts).

What is Group 15 called?

Nitrogen group element, any of the chemical elements that constitute Group 15 (Va) of the periodic table. The group consists of nitrogen (N), phosphorus (P), arsenic (As), antimony (Sb), bismuth (Bi), and moscovium (Mc).

What is Group 14 called?

Carbon group element, any of the six chemical elements that make up Group 14 (IVa) of the periodic table—namely, carbon (C), silicon (Si), germanium (Ge), tin (Sn), lead (Pb), and flerovium (Fl).

Why are they called Pnicogens?

Group 15 elements are called pnicogens because they are poisonous and choking in nature. … Group 16 elements are not called ‘aerogens’ they are called chalcogens because they are ore forming elements.

What are the 4 characteristics of a group?


  • Size: To form a group, it must be having at least two members. …
  • Goals: Every group has certain goals, that are the reasons for its existence.
  • Norms: A group has certain rules, for interacting with the group members.
  • Structure: It has a structure, based on the roles and positions held by the members.

What are six characteristics of effective teams?

  • Shared goals. If asked to identify their goal at work, most staff members would probably say that it is to provide high-quality, patient-centered care. …
  • Clearly defined roles. …
  • Shared knowledge and skills. …
  • Effective, timely communication. …
  • Mutual respect. …
  • An optimistic, can-do attitude.

What are examples of out groups?

By contrast, an out-group is a social group with which an individual does not identify. People may for example identify with their peer group, family, community, sports team, political party, gender, religion, or nation.

What are the two most important common features of the group 2 elements?

All the elements in Group 2 have two electrons in their valence shells, giving them an oxidation state of +2. Covers the elements beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba).

What is Group 2 called?

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). … In most cases, the alkaline earth metals are ionized to form a 2+ charge.

Which two groups can hydrogen act like?

Hydrogen as a halogen? Hydrogen, like the halogens, has one electron short of a complete outer shell and can form H- ions like Cl- and therefore forms ionic compounds with reactive metals – NaH similar in structure to NaCl. Hydrogen also exists as a diatomic gas like fluorine and chlorine.

Is group 1 or Group 2 more reactive?

The outermost electrons of the alkaline earth metals (group 2) are more difficult to remove than the outer electron of the alkali metals, leading to the group 2 metals being less reactive than those in group 1.

What are the two most reactive groups?

The two most reactive families of elements are the halogens and the alkali metals.

What are the three most reactive groups?

The halogens, alkali metals, and alkaline earth metals are highly reactive. The most reactive element is fluorine, the first element in the halogen group. The most reactive metal is francium, the last alkali metal (and most expensive element). The least reactive elements are the noble gases.

What is the most active element in Group 17?

The most active element in Group 17 is FLUORINE.

What are the elements of group 17 called and why?

The elements of Group VIIA (new Group 17 – fluorine, chlorine, bromine, iodine, and astatine) are called the halogens (tan column). The term “halogen” means “salt-former” because these elements will readily react with alkali metal and alkaline earth metals to form halide salts.



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