they're metals, to be precise gr1 alkaline gr2 alkaline earth. Both have metallic properties: conduct heat and electricity; malleable/ductile etc. Gr1 metals are soft and very reactive.
they're non metals, they form acid solutions and not dense.
their general properties is that they are all non metals
Both arrange elements in groups of elements having similar properties.
Both arrange elements in groups of elements having similar properties.
they are gasses
It groups together elements with similar properties.
There are 18 groups in the modern periodic table. The groups are also referred as families.
7 periods and 18 groups are there on the modern periodic table.
The group number tells you the number of valence electrons in the outer shell. This is important because it is the valence electrons that participate in bonding, and thus in determining the properties of the element.
The columns are called groups. They are also called families. There are 18 groups in Periodic Table.A column is known as a group in periodic table. There are 18 groups in the modern setting of periodic table. Elements in the same group usually share same chemical properties and striking physical characteristic trends.
There are 18 main groups in the modern periodic table of elements.
The modern Periodic Table arranges elements based on properties. These properties include valence electrons of the elements and density for example.