System(s)
The group number describes the type of element. it determines the number of valence electrons. It also describes its chemical properties.
group
the group number,element in some way describes the number of valence electrons or the property that they exhibit
A group of joined locks on a canal is known as a Staircase.
Chinese
Both the Irish and the Chinese immigrants helped to build the railroads in America.
Group number describes the number of valence electrons. It helps in estimating chemical properties of that element.For example-group-1 elements have 1 valence electronThe group number of an element is equal to the number of valence electrons. The number of valence electrons is responsible for the chemical properties. So the chemical properties of the element can be determined by the group number.
A molecule.
Valence electrons describe the number of available electrons for bonding. The group number describes outermost electron. The elements in same group has same valence electrons.The number of electrons available for bonding are the valence electrons. In an element, the group number is equal to the number of valence electrons. So the number of electrons available for bonding can be identified by the group number.
Chinese
chinese
"Joined" is the past participle of join, as in "I have joined the group."