In chemistry and atomic physics, the main group is the group of elements (sometimes called the representative elements) whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements.
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What is considered a main group element?
The main group elements are classified as belonging to the s- and p-blocks in the periodic table. They range from gases such as fluorine and oxygen through nonmetals (e.g., boron, phosphorus, and sulfur) and semimetals (metalloids; e.g., germanium) to very reactive metals such as sodium and potassium.
What are main group elements examples?
Specific examples of main group elements include helium, lithium, boron, carbon, nitrogen, oxygen, fluorine, and neon.
What are the three main group elements?
The three major groups on the Periodic Table are the metals, nonmetals and metalloids. Elements within each group have similar physical and chemical properties.
What are the 4 main groups on the periodic table?
Elements can be classified as metals, metalloids, and nonmetals, or as a main-group elements, transition metals, and inner transition metals. Groups are numbered 1–18 from left to right.
How many main group elements are there?
The s-, p-, and d-block elements of the periodic table are arranged into 18 numbered columns, or groups. The elements in each group have the same number of valence electrons. As a result, elements in the same group often display similar properties and reactivity.
Is yttrium a main group element?
Other Main Group Elements
A few scientists include the group 3 elements (scandium and yttrium) and sometimes the lanthanides and actinides.
Is californium a main group element?
Californium is a radioactive chemical element with the symbol Cf and atomic number 98.
| Californium | |
|---|---|
| Atomic number (Z) | 98 |
| Group | group n/a |
| Period | period 7 |
| Block | f-block |
What are the 7 groups in the periodic table?
What are the 7 groups in the periodic table
- The Alkali Metals.
- The Alkaline Earth Metals.
- The Transition Metals.
- The Metalloids.
- Other Metals.
- The Non-metals.
- The Halogens.
- The Noble Gases.
What are the 8 groups in the periodic table?
The following are the 8 groups of the periodic table:
- Alkali metals.
- Alkaline earth metals.
- Rare earth metals.
- Crystallogens.
- Pnictogens.
- Chalcogens.
- Halogens.
- Noble gases.
What are the 5 main groups of the periodic table?
5 Element Families
- Alkali metals.
- Alkaline earth metals.
- Transition metals.
- Halogens.
- Noble gases.
Is osmium a main group element?
It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores. Osmium is the densest naturally occurring element.
| Osmium | |
|---|---|
| Group | group 8 |
| Period | period 6 |
| Block | d-block |
| Electron configuration | [Xe] 4f14 5d6 6s2 |
Is krypton a main group element?
krypton (Kr), chemical element, a rare gas of Group 18 (noble gases) of the periodic table, which forms relatively few chemical compounds. About three times heavier than air, krypton is colourless, odourless, tasteless, and monatomic.
krypton.
| atomic number | 36 |
|---|---|
| oxidation numbers | 0, 2 |
| electron configuration | (Ar)3d104s24p6 |
Is tellurium a main group element?
The oxygen family, also called the chalcogens, consists of the elements found in Group 16 of the periodic table and is considered among the main group elements. It consists of the elements oxygen, sulfur, selenium, tellurium and polonium. These can be found in nature in both free and combined states.
Is barium a main group element?
The metals that occur in Groups 1, 2, and 13–15 in the periodic table are called the main-group metals.The alkaline-earth metals—beryllium, magnesium, calcium, strontium, barium, and radium—occur in Group 2 in the periodic table (Figure I. 1).
Which element is a main group metal?
All transition elements are metals, but main group elements are classified into metallic and nonmetallic elements. Germanium and polonium may also be included as metals. Boron, silicon, germanium, arsenic, antimony, selenium, and tellurium exhibit some metallic characteristics and they are sometimes called metalloids.
Is Gallium a main group metal?
gallium (Ga), chemical element, metal of main Group 13 (IIIa, or boron group) of the periodic table.
What element is in period 4 Group 12?
zinc group
zinc group element, any of the four chemical elements that constitute Group 12 (IIb) of the periodic table—namely, zinc (Zn), cadmium (Cd), mercury (Hg), and copernicium (Cn).
How many groups are there in the periodic table?
18
Groups are numbered from 1 to 18. From left to right in the periodic table, there are two groups (1 and 2) of elements in the s-block, or hydrogen block, of the periodic table; ten groups (3 through 12) in the d-block, or transition block; and six groups (13 through 18) in the p-block, or main block.
Why are Group 7 called halogens?
Group 7 elements form salts when they react with metals. The term ‘halogen’ means ‘salt former‘, which is why Group 7 elements are called halogens. In general the halogens comprise the most reactive group of non-metals. The halogens are so reactive that they cannot exist free in nature.
What are Group 6 elements called?
Chalcogens
Group 6A — The Chalcogens. 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).