Question

a) What is the group in the periodic table? In which part of a group would you separately except the elements to have
i) The greatest metallic character
ii) The largest atomic size?
b) In what respects do the properties of group $1$ element form a group? Explain with examples by taking one element from each group.
C) From the standpoint of atomic structure, what determines which element will be the first and which the last in a period of the periodic table?
D) Explain why the properties of elements are repeated after $2$, $8$, $18$ and $32$ elements in the periodic table.
E) What are the advantages of the periodic table?

Answer 1

We need to know that in chemistry, periodic tables play a vital role. Now we are using a modern periodic table. This modern periodic table consists of totally $118$ elements. In the periodic table there are totally $18$ columns and $7$ rows. The columns are called groups. Hence, $18$ groups in the periodic table. The rows are called periods. Hence, totally $7$ period in the table.

Complete answer:
a) What is the group in the periodic table? In which part of a group would you separately except the elements to have
In general, modern periodic table ordering is based on the atomic number of the atoms. The lowest atomic number starting from the first and followed by a higher atomic number.
Depending on the energy level of the outermost shell in the atoms, periods are classified and place the atom in respect period. Depending on the electrons shielding and size and physical behaviour of the atom, groups are coming.
i) The greatest metallic character
The lowest period in the group only has the greatest metallic character.
ii) The largest atomic size?
The lowest period in the group only has the largest atomic size.
b) In what respects do the properties of group 1 element form a group? Explain with examples by taking one element from each group.
The valency of all the elements in any group is the same. The valency of elements in group 1 is one and ionic compounds in chemical reaction in nature and not able to share electrons. The ionisation energy and electron affinity of the elements will decrease from top to bottom of any group.
C) From the standpoint of atomic structure, what determines which element will be the first and which the last in a period of the periodic table?
The valency of the atom depends on the group in the periodic table.
D) Explain why the properties of elements are repeated after $2$, $8$, $18$ and $32$ elements in the periodic table.
The properties of elements are repeated after $2$, $8$, $18$ and $32$ elements in the periodic table, because of the stable electronic configuration.
E) What are the advantages of the periodic table?
It is easy to study the properties of metals.
It is easy to study the properties of the non-metals.
It is easy to study the properties of the elements in the group wise in the periodic table.

Note:
As we know, in the world there are a lot of elements in various forms. For study and developing purposes, classification happens. Periodic table used to study the elements in easy form. If one new element is discovered, it means, based on the physical and chemical property we placed in the periodic table.