Group 1 and Group 2 Elements on the Periodic Table

The key difference between group 1 and group 2 components is that everyone group 1 components have unpaired electrons in their outermost orbital, whereas group 2 components have paired electrons in their outermost orbital.

S block components are found in groups 1 and 2 of the periodic table. That means; these parts have their outermost electrons within the s orbital. The groups one and two differ from each other looking at the amount of electrons in their outermost orbital. One s orbital will contain only 2 electrons as a result of the magnetic quantum number of this orbital is 0.

The elements in group one are called the alkali metals; those in group 2 are the alkaline earth metals; those in fifteen are the pnictogens; those in sixteen are the chalcogens; those in seventeen are the halogens; and those in eighteen are the noble gases.

What are the characteristics of group 1 Elements of periodic table

Group one elements are chemical elements having one electron in the outer s-orbital. it’s the first column of the s block of the tabular array. It contains hydrogen and alkali metals. The members of this group 1 are as follows:

Hydrogen (H)

Lithium (Li)

Sodium (Na)

Potassium (K)

Rubidium (Rb)

Caesium (Cs)

Francium (Fr)

Although hydrogen belongs to this group due to its electron structure, it differs from alkali metals in several ways.. As an example, hydrogen exists as a gas, while other elements during this group are metals. These metals are all shiny, extremely reactive, and really soft (we will simply cut them employing a simple knife).

Generally, the group 1 elements show low densities, low melting points, low boiling points and have body-centred boxlike crystal structures. Moreover, they need distinct flame colours, so we are able to simply distinguish them by exposing a sample to a gas burner. There are periodic differences as you progress through the alkali metals group, as shown below.

The atomic size will increase 

• The melting point {freezing point|temperature} and boiling point decrease due to the flexibility to create sturdy bonds is diminished down the group (when the atom gets large, the formed bond is weak).
• The density will increase.
• First ionisation energy decreases as a result of massive atoms, the outermost electron is loosely bound and it will simply be removed.
• Electronegativity decreases 
• Reactivity decreases.
• Alkali metals have low electron affinities than other parts

What are the characteristics of  Group 2 Elements of  Periodic table 

Group 2  elements are chemical elements having their outermost electron pair in an s orbital. Therefore, their valence electrons are in the form of ns2. Further, this group is the second column of the s block. We name them as alkaline-earth metal metals. The members of this cluster area unit as follows:

Beryllium (Be)

Magnesium (Mg)

Calcium (Ca)

Strontium (Sr)

Barium (Ba)

Radium (Ra)

What’s the difference? Elements of the periodic table in groups 1 and 2

The group 1 and a pair of dissents from one another depending on the amount of electrons in their outer orbital. The key distinction between group 1 and group 2 elements is that all group one elements have unmatched electrons in their outermost orbital, whereas group 2 elements have paired electrons in their outer orbital.

The below infographic shows a lot of comparisons relating to the distinction between group 1 and group 2 elements.

 Group 1 vs group 2 elements

Features of the modern periodic table.

The periodic table groups elements together based on their chemical and physical properties. There are rows and columns in the table.In the periodic table, the vertical columns indicate groups. The horizontal rows in the table represent Periods.The elements are arranged based on their increasing atomic number.

There are seven periods and eighteen groups within the table.

The inert gases i.e. He, Ne, Ar, etc. … 

All the groups are divided into sub groups A and B except zero and VIII group within the modern tabular array.The three broad classes of parts are metals, nonmetals, and metalloids. Most parts are metals. Nonmetals are placed on the right hand side of the tabular array. Metalloids have properties of both metals and nonmetals.Modern tabular array is based on modern periodic law and parts are arranged in increasing order of their atomic numbers. A modern tabular array has 18 vertical columns known as groups. parts in any group of the periodic table have similar physical and chemical properties. There are 7 horizontal rows known as periods.

Conclusion

The vertical columns on the periodic table are known as groups or families because of their similar chemical behaviour. All the members of a family of elements have a similar number of valence electrons and similar chemical properties

The group one and 2 differ from one another looking at the number of electrons in their outermost orbital. The key distinction between group one and group 2 parts is that all group 1 parts have mismatched electrons in their outermost orbital, whereas group 2 parts have paired electrons in their outermost orbital.