Elements in groups and periods

There are just about 120 known components. For instance, you are comprised of billions of billions of particles yet you .

Elements

CHEMICAL ELEMENTS ARE those substances that cannot be split up into other substances. For example, gold cannot be split but water can be split into the elements hydrogen and oxygen. Each element is made up of atoms with fixed number of protons in their nucleus. Atoms of gold have 79 protons in their nucleus while atoms of hydrogen have 1.-Elements in groups and periods

Number of elements

There are about 85 naturally occurring elements. But scientists have discovered about 25 more, making the total number of identified Elements in groups and periods is , 112.

Periodic table

Periodic table is a chat devised by John Dalton (1766-1844) on which all the elements can be arranged according to the number of protons in the nucleus. The columns in the table are called Groups, and the rows are called Periods. Each period contains elements that have atoms with the same number of electron shells. In each period, the number of protons along With the number of electrons in the atom increases one by one. Elements in the same Group have similar properties, because they have the same number of electrons in the Outer shell of their atoms.

The Periodic Table

The Periodic Table arranges all the elements in Periods (rows) and Groups (columns). The colors show some of the major kinds of elements, including metals and transition elements.

What are the noble gases?

Noble gases are the elements listed in Group 0, located on the far right of the Table. The outer electron shells in these have a full complement of electrons. That is why they rarely react with other substances. They are therefore called inert gases also. Argon and xenon are noble gases that are often used in light bulbs, because the filament in the light bulb heats up without burning.

Reactive elements

If elements gain or lose electrons readily they are reactive. The further to the left they are in the Table, the more reactive they are. Group 1 metals, such as sodium and potassium are very reactive.

What is metal?

Metals are those substances that are dense, hard, and shiny that ring when they are hit with another metal. Also, metals are good conductors of heat and electricity.

Compounds

Compounds are substances that are formed when two or more elements are combined. In a compound, each molecule (smallest particle) has the same combination of atoms. For example, molecules of sodium chloride are one sodium atom joined to one chlorine atom. The properties of a compound are different from the properties of the elements that form the compound. Sodium splits when put in water; chlorine is a thick green gas, yet sodium chloride is table salt.

About The Post

Through This article, I imparted to you About Elements in groups and periods . I figure you would have preferred this article, at that point certainly share it with your companions, aside from this you will have any issue. in the event that you have any inquiry let me know in the remark area underneath I will support you.

#what is a group on the periodic table #periodic table groups 1-8 #periodic table with names #periodic table group names 1-18 #periodic table groups and periods #group of elements #118 elements and their symbols #atomic number of elements from 1 to 30 #atomic number list #periodic table of elements with names and symbols #modern periodic table #periodic table of elements #periodic table of elements list #118 elements and their symbols #Elements #Elements in groups and periods #Elements in periods table #gass #Number of elements #Periodic table #The Periodic Table #What are the noble gases? #Reactive elements #What is metal? #Compounds