The following are the 8 groups of the periodic table:
What are the 7 groups in the periodic table
Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.
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.
5 Element Families
Oct 27, 2019
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.
The vertical columns in a periodic table which are organized on the basis of the presence of electrons in the outermost shell are termed as a group. The elements in the same group show similar properties due to the similar electronic configuration of their atoms.
The elements in group IA are called the alkali metals.
The group number is listed on top of each column. The table shown above shows 18 groups. Some tables only show eight groups, while others show up to 32 groups. 18 groups is the most common, but the number of groups does not have a significant impact on the information the table provides.
The vertical columns in the periodic table are called 'groups' and horizontal rows in the table are called periods. Was this answer helpful?
Features of Modern Periodic Table. There are eighteen vertical columns known as groups in the modern periodic table which are arranged from left to right and seven horizontal rows which are known as periods.
If you are given with the atomic number of an element you can find it's period number and group number. The period number is related to the number of electron occupied shells in the element and the period number is linked to its valence electrons.
The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties.
The period is represented by the principal quantum number of the valence shell. Block is predicted on the basis of sub shell which receives the last electron. Group is predicted on the basis of the number of electrons in the penultimate or the outer most shell.
The group of an element is predicted from the number of electrons in the valence shell or/and penultimate shell as follows: a)For s block elements ,group number is equal to the number of valence electrons. b) For p block elements ,group number is equal to 10+number of electrons in the valence shell.
|Group||16||−218.79°C, −361.82°F, 54.36 K|
|Period||2||−182.962°C, −297.332°F, 90.188 K|
|State at 20°C||Gas||O|
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).
Neon (Ne) is the Group 8A chemical element that has atomic number 10 and mass 20.1797. Neon is an inert gas which is unreactive, has a noble gas configuration of electrons, and emits orange light.
|Group||1||97.794°C, 208.029°F, 370.944 K|
|Period||3||882.940°C, 1621.292°F, 1156.090 K|
|State at 20°C||Solid||Na|